Tutors Answer Your Questions about Surface-area (FREE)
Question 1141749: A painter is calculating how much paint he will need to cover a cylindrical goal roller (including both ends of the roller) the roller is 10 inches long and has an diameter of 4 inches, what’s the surface area of the foam roller?
A) 40 π
B) 48 π
C) 64 π
D) 96 π
Click here to see answer by josmiceli(19441)   |
Question 1141761: Find the surface area of a cylinder with radius 10 cm and height 13 cm.
A. 722.2 cm^2
B. 1444.4 cm^2
C. 1632.8 cm^2
D. 1583.4 cm^2
I applied the surface area formula of a cylinder and received the answer as 1445.13. I was wondering if B was the answer not. Thanks for helping!
Click here to see answer by Alan3354(69443)  |
Question 1141763: Which of the following describes the effect on the area of a square when the side length is doubled.
A. The area is increased by a factor of 4.
B. The area remains constant.
C. The area is reduced by a factor of 1/2.
D. The area is doubled.
I was thinking that the answer could be D but I'm not sure. Thank you!
Click here to see answer by ikleyn(52781)  |
Question 1141762: Which of the following describes the effect on the area of a triangle when the height is doubled and the base remains the same.
The area is reduced by a factor of 1/2.
The area is doubled.
The area remains constant.
The area is increased by a factor of 4.
Click here to see answer by Theo(13342)  |
Question 1141765: What is the area of a square that has a radius of 7(square root of 2) ft (from the center of the square to any vertex)?
49 ft^2
196 ft^2
147 ft^2
196(square root of 2) ft^2
The answer that I got was 49 ft^2. I was not sure how to solve this question, if it's possible to show steps on how it was solved. Thank You!
Click here to see answer by ikleyn(52781) |
Question 1141765: What is the area of a square that has a radius of 7(square root of 2) ft (from the center of the square to any vertex)?
49 ft^2
196 ft^2
147 ft^2
196(square root of 2) ft^2
The answer that I got was 49 ft^2. I was not sure how to solve this question, if it's possible to show steps on how it was solved. Thank You!
Click here to see answer by josgarithmetic(39617) |
Question 1141765: What is the area of a square that has a radius of 7(square root of 2) ft (from the center of the square to any vertex)?
49 ft^2
196 ft^2
147 ft^2
196(square root of 2) ft^2
The answer that I got was 49 ft^2. I was not sure how to solve this question, if it's possible to show steps on how it was solved. Thank You!
Click here to see answer by Edwin McCravy(20055)  |
Question 1141765: What is the area of a square that has a radius of 7(square root of 2) ft (from the center of the square to any vertex)?
49 ft^2
196 ft^2
147 ft^2
196(square root of 2) ft^2
The answer that I got was 49 ft^2. I was not sure how to solve this question, if it's possible to show steps on how it was solved. Thank You!
Click here to see answer by Alan3354(69443) |
Question 1141765: What is the area of a square that has a radius of 7(square root of 2) ft (from the center of the square to any vertex)?
49 ft^2
196 ft^2
147 ft^2
196(square root of 2) ft^2
The answer that I got was 49 ft^2. I was not sure how to solve this question, if it's possible to show steps on how it was solved. Thank You!
Click here to see answer by MathTherapy(10552)  |
Question 1141975: the volume of a right circular cone is 5 litres. calculate the volume of the two parts into which the cone is divided by a plane parallel to the base. one third of the way down from the vertex to the base. give your answer to the nearest ml
Click here to see answer by greenestamps(13200)  |
Question 1141974: a solid aluminum casting for a pulley consist of three discs each 1.5cm thick, of diameters 4cm 6cm and 8cm. a central hole 2cm in diameter is drilled out. if the density of aluminum is 2.8g/cm^³. calculate the mass of the casting
Click here to see answer by Alan3354(69443) |
Question 1141986: Which has a greater volume: two regular cans of soup, each with a diameter of 10 cm and height 15 cm, or one family-size can of soup, which has a diameter of 14 cm and height of 15 cm?
two regular cans of soup
one family-size can of soup
My answer was: one family-size can of soup.
Click here to see answer by josgarithmetic(39617) |
Question 1141986: Which has a greater volume: two regular cans of soup, each with a diameter of 10 cm and height 15 cm, or one family-size can of soup, which has a diameter of 14 cm and height of 15 cm?
two regular cans of soup
one family-size can of soup
My answer was: one family-size can of soup.
Click here to see answer by MathTherapy(10552) |
Question 1141986: Which has a greater volume: two regular cans of soup, each with a diameter of 10 cm and height 15 cm, or one family-size can of soup, which has a diameter of 14 cm and height of 15 cm?
two regular cans of soup
one family-size can of soup
My answer was: one family-size can of soup.
Click here to see answer by Alan3354(69443) |
Question 1142070: A circular cardboard piece is needed for the base of a volcano model. The volcano is 46 centimeters tall and has a volume of 800 cubic centimeters. Which equation can be used to find the area of the circular base?
Click here to see answer by ikleyn(52781) |
Question 1142087: On top of a cube that has a measure of 3 inches on one of its sides sits a pyramid. All sides are perfectly alingned such that The pyramid sits perfectly atop the cube. The pyramid is 1 inch high. What is the total volume of the combined figure?
A)30
B) 33
C)36
D)39
Click here to see answer by math_helper(2461)  |
Question 1142092: Fancy cake Bakery has been asked to create a customized cake in the shape of a rectangular pyramid. The volume of the cake must contain one 144 in.³ of cake. The customer specified that the cake must be exactly 9 inches high. Which of the following could be the dimensions of the rectangular base of the Cake?
A) 4 in by 4 in.
B)5 in by 6 in
C)6 in by 7in
D) 6 in by 8 in
Click here to see answer by josmiceli(19441) |
Question 1142086: At a packaging and shipping warehouse, packages that’ await shipment are store in a storage area measuring 16 feet long, 24 feet wide and 4 feet high. All packages in this warehouse are cubical, measuring 2 feet on all sides. How many packages can be stored in the storage area?
A)96
B)192
C)769
D)1536
Click here to see answer by addingup(3677)  |
Question 1142150: • The bedroom is 17 feet long by 18 feet wide, and the ceiling is 9 feet high.
• The inside of the bedroom door will be painted the same color as the walls.
• Two coats of paint will be applied to all of the painted surfaces.
• The room has one window, measuring 3 feet, 9 inches by 4 feet, which will not be painted
1. Discuss different ways to construct the room that will be painted. Are there any restrictions on where the window and door will be located? Will the overall amount of paint that is needed change based on where these are placed in the room?
explain what the different ways to construct the room and how would I answer this problem?
Click here to see answer by josmiceli(19441) |
Question 1142152: Length is 17, width is 18, height is 9 on a cube.
4.Using the measurements diagrammed above, label all of the rectangular faces in feet in the following table:(2 answer)
Face Dimensions
Ceiling
?
?
Left Wall
?
?
Right Wall
?
?
Front Wall
?
?
Back Wall
?
?
5.Because all of the ending values are given in feet, find the window dimensions in feet. Convert the length of 3 feet, 9 inches strictly into feet. The answer should be in decimal format. Do not round. Note that 12 inches are equal to 1 foot.
Face Dimensions
Window
?
?
* how would I answer solve these questions.
Click here to see answer by ikleyn(52781) |
Question 1142148: • The bedroom is 17 feet long by 18 feet wide, and the ceiling is 9 feet high.
• The inside of the bedroom door will be painted the same color as the walls.
• Two coats of paint will be applied to all of the painted surfaces.
• The room has one window, measuring 3 feet, 9 inches by 4 feet, which will not be painted
1. Discuss different ways to construct the room that will be painted. Are there any restrictions on where the window and door will be located? Will the overall amount of paint that is needed change based on where these are placed in the room?
explain what the different ways to construct the room and how would I answer this problem?
Click here to see answer by ikleyn(52781) |
Question 1142149: Length is 17, width is 18, height is 9 on a cube.
4.Using the measurements diagrammed above, label all of the rectangular faces in feet in the following table:(2 answer)
Face Dimensions
Ceiling
?
?
Left Wall
?
?
Right Wall
?
?
Front Wall
?
?
Back Wall
?
?
5.Because all of the ending values are given in feet, find the window dimensions in feet. Convert the length of 3 feet, 9 inches strictly into feet. The answer should be in decimal format. Do not round. Note that 12 inches are equal to 1 foot.
Face Dimensions
Window
?
?
* how would I answer solve these questions.
Click here to see answer by Alan3354(69443) |
Question 1142151: The walls and ceiling inside your bedroom need to be painted. To save money, you decide that you will paint the bedroom yourself. Use the following information to solve this problem:
• The bedroom is 17 feet long by 18 feet wide, and the ceiling is 9 feet high.
• The inside of the bedroom door will be painted the same color as the walls.
• Two coats of paint will be applied to all of the painted surfaces.
• The room has one window, measuring 3 feet, 9 inches by 4 feet, which will not be painted.
Pólya’s Principle Step 1: Understand the Problem
1. Describe in detail what you understand the problem to be. In other words, what problem will you need to solve? Is there enough information to enable you to find a solution to your problem?
Click here to see answer by ikleyn(52781) |
Question 1142147: The walls and ceiling inside your bedroom need to be painted. To save money, you decide that you will paint the bedroom yourself. Use the following information to solve this problem:
• The bedroom is 17 feet long by 18 feet wide, and the ceiling is 9 feet high.
• The inside of the bedroom door will be painted the same color as the walls.
• Two coats of paint will be applied to all of the painted surfaces.
• The room has one window, measuring 3 feet, 9 inches by 4 feet, which will not be painted.
Pólya’s Principle Step 1: Understand the Problem
1. Describe in detail what you understand the problem to be. In other words, what problem will you need to solve? Is there enough information to enable you to find a solution to your problem?
Click here to see answer by addingup(3677) |
Question 1142179: Because all of the ending values are given in feet, find the window dimensions in feet. Convert the length of 3 feet, 9 inches strictly into feet. The answer should be in decimal format. Do not round. Note that 12 inches are equal to 1 foot.
1..Using the formula concepts and dimensions above, find the bedroom’s total painted surface area for all of the walls.
Show all of the calculations step by step, including the units of measurement, and round your final answer up to the nearest whole measurement unit in the following table:
Total Painted Wall Surface Area With One Coat of Paint
?
Click here to see answer by Alan3354(69443) |
Question 1142493: A Farmer can plow 42 are in a day. His field measures 3.03 hectares but he wants to leave aside a 60m times 50m plot to build a warehouse. How many days will he take to plow the field? If you can answer this quickly I would really appreciate it. Thank You.
Click here to see answer by ikleyn(52781) |
Question 1142527: Prove that the surface area of a cone without its base circle is A=pirs, where r is the base radius and s is the slant height of the cone.
I have even been provided with solutions but I don't understand them! If you would like to see the answers, just reply back saying so. Thank you!
Click here to see answer by ikleyn(52781) |
Question 1142645: Painters will use a 16-foot ladder to paint a house. If the painters must place the foot of the ladder at least 4 feet away from the house to avoid flowers and shrubs, what is the highest point on the house that the ladder will reach? Round to the nearest tenth.
Click here to see answer by greenestamps(13200) |
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