Questions on Geometry: Area and Surface Area answered by real tutors!

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Question 596115: VABCDE is a right pyramid whose base is a regular pentagon of side 9 m. given that the area of the base is 139 m and the total surface area of the pyramid is 409m , find its slant height.
Click here to see answer by Cheerypink(1)

Question 844469: A rectangle is inscribed fully inside an equilateral triangle. The triangle has a side length of 10. The rectangle shares one side with a triangle side (but the rectangle side is shorter than the triangle side. The rectangle's other two vertices each touch another side of the triangle.
I already know the entire triangle has an area of 25 radical 3. I would like to find the area of the rectangle. Or the area of the triangle excluding the rectangle.
Click here to see answer by josgarithmetic(39617)

Question 844923: What happens to the area of a parallelogram, if its height is doubled?
Click here to see answer by Cromlix(4381)

Question 845345: How do u solve area of a surface using five numbers

Click here to see answer by Alan3354(69443)

Question 846130: Find the missing variable for a cone.
r=9
L=?
SA=622.04
Equation for SA=PIr^2+PIrL
This is what I tried:
622.04=PI(9^2)+PI(9)(L)
622.04=PI(81)+PI(9)(L)
622.04=254.4690049+28.2733388(L)
622.04=282.7433388(L)
622.04/282.7433388=L
L=2.20001608 which was incorrect, because when I plug 2.2 into the equation I do not get 622.04
Click here to see answer by Fombitz(32388)

Question 846223: The dimensions of the rectangular prisms are height = 7 feet, width = 4 feet, and length = 3 feet. What is the surface area of the rectangular prism excluding the bottom?
Click here to see answer by ewatrrr(24785)

Question 846241: A tire has a circumference of 10.7 ft. What is the radius?
Click here to see answer by ankor@dixie-net.com(22740)

Question 846499: The radius of a sphere is the same as the radius of a cylinder with the height the same as radius. Calculate the ratio:
V sphere: V cylinder ( in simplest form )
Click here to see answer by Fombitz(32388)

Question 846879: Find the area of the triangle with vertices (0, 0), (5, 3) and (2, 6).
Click here to see answer by Fombitz(32388)

Question 846939: What would the area of a octagon be if it the length of the sides are 4m
Click here to see answer by Edwin McCravy(20055)

Question 847162: what are two rectangles with the area of 128?
Click here to see answer by jim_thompson5910(35256)

Question 847153: The volume of a cube is 10,648 cm3 determine its surface area.
Click here to see answer by ewatrrr(24785)

Question 847300: A rectangle has an area of 144 square inches. The length is 10 inches longer than the width. How do you solve?
Click here to see answer by josgarithmetic(39617)

Question 847526: A cube with edge of length 4cm is divided into 8 identical cubes. How much greater is the combined surface area of 8 smaller cubes than the surface area of the original cube?
Click here to see answer by Alan3354(69443)

Question 847918: What is the surface area of a cube who has a length of 4 inches, a width of 7 inches and a height of 10 inches?
Click here to see answer by rothauserc(4718)

Question 848013: What is the surface area of a cube with faces that each have an area of 14 cm2?
Click here to see answer by ewatrrr(24785)

Question 847886: 150 spherical marbles each of diameter 1.4 cm are dropped in a cylindrical vessel of diameter 7 cm. This vessel contains some water and the marbles are completely immersed. Find the rise in the water level.
Click here to see answer by Fombitz(32388)

Question 848110: what is the dimensions of a rectangular prism if the Surface Area is 350 ssquared? The closest answer i got was 346(with the dimensions of 13, 5 and 6)
Click here to see answer by stanbon(75887)

Question 848139: A parallelogram has a height of 15 inches and an area of
450 square inches. What is the length of the base?
Click here to see answer by edjones(8007)

Question 848108: What dimensions does a rectangular prism have if the surface area is 350 cm squared? The closest I got was 346(with the dimensions of 13,5 and 6)
Click here to see answer by richwmiller(17219)

Question 848264: What is the surface area of a cube with edge 3 yards?
Click here to see answer by rvfer(117)

Question 848524: The area of a rectangular lot is to be 1456 square ft. if the width of the lot is 24ft less than the length, find the dimensions of the lot.
Click here to see answer by ewatrrr(24785)

Question 848592: Hello, please help me with this word problem:
The area of a pentagon can be found using the formula Where A = area and p = the perimeter of the pentagon.
If the area of the pentagon is 168 square inches, what is the length, in inches, of each side of the pentagon?
Thank You :)
Click here to see answer by swincher4391(1107)

Question 848952: How to find area

Click here to see answer by richwmiller(17219)

Question 849111: Hello,
First, I am given a picture of two, similar rectangles. One is larger than the other. The smaller one has x and y on both bases of it. The larger rectangle has 8 and 20, in that order, on its two bases. It gives the area of the smaller rectangle and asks for you to solve for variables x and y. I do not want an answer but a walk through on how to get the answer.
Thank You!
Click here to see answer by ewatrrr(24785)

Question 849110: I have 20 boxes that need to be wrapped. The dimensions are 6 in (top) x 10 in ( wide) x 8 in ( height). How many metres of wrapping paper should I buy for the 20 boxes ?
Thank you
Click here to see answer by ewatrrr(24785)

Question 849577:

The diagonal of the floor of a square room is 6 meters.
What is the length of a side of the room? Round to the nearest tenth.

Click here to see answer by checkley79(3341)

Question 849775: The volume and curved surface area a cylinder are 1650cm^3 and 660cm^2 respectively. Find the radius and height of the cylinder
Click here to see answer by ankor@dixie-net.com(22740)

Question 850062: A square room is 3m height and 10 litre is needed to paint all the walls and ceiling. If 1 litre of the paint will cover 16 square metres, write an equation and find the length of the room.?
Click here to see answer by josgarithmetic(39617)

Question 850093: An edge of a cube is increased by 10 %.find the %by which the surface area has increased.

Click here to see answer by josgarithmetic(39617)

Question 850254: You are designing a container for oatmeal. Your design is a rectangular prism with a height of 12in, a width of 8in, and a depth of 3in. What is the surface area?
Click here to see answer by harpazo(655)

Question 850179: if the total surface area of a solid hemisphere is 460 cm square.find its volume
Click here to see answer by Alan3354(69443)

Question 850341: what is the surface area of a rectangle with a length of 3 centimeters and a width of 1 centimeters and a height of 2 centimeters
Click here to see answer by Fombitz(32388)

Question 850445: the problem Im having difficulty with is as follows:
A tumor in a persons body can be approximated by a spherical shape. Radiation treatments cause the tumor to shrink. As a result, the radius decreases at a rate of 1mm per mo.
a) if the tumor has a radius of 2.5mm, what is the surface area?
b) after two months of radiation, what is its surface area?
Thank you so much for your help!
Click here to see answer by Alan3354(69443)

Question 851015: the length, width, and height of a cereal box are 20 cm, 7 cm, and 28cm. what is the least amount of cardboard that can be used to make the box
Click here to see answer by josgarithmetic(39617)

Question 851413: A cube has a surface area of 150 square inches. What is the surface area
Of a similar cube that is larger by a scale factor of 2?
Click here to see answer by Alan3354(69443)

Question 851536: Ready-mixed concrete is sold by the cubic yard. A landscaper contractor wants to form concrete paving blocks that are rectangular solids with dimensions 36 inches by 36 inches by 6 inches. Assuming there is no waste, how many such blocks can she expect to make from one cubic yard of concrete?
I know the answer is 6 but not sure how to solve it. I know there are 46656 inches in a cubic yard, but I'm not sure if I need to find surface area or volume.
Thank you! I'm a GED teacher and don't know how to explain this to my students
Click here to see answer by josgarithmetic(39617)

Question 851987: If x = 8 inches and y = 12 inches, where y is the height of each triangle of the pyramid, what is the surface area of the figure?

Click here to see answer by Alan3354(69443)

Question 852042: A tool is in the shape of a spherical cone. Find the volume of the tool if the area of its zone is 2cm^2 and the radius of its sphere is 30 cm.
Click here to see answer by Seutip(231)

Question 852149: You want to install a 1 yd wide walk around a circular swimming pool. The diameter of the pool is 24 yds. What is the area of the walk?
Use 3.14 for pi.

Click here to see answer by Edwin McCravy(20055)

Question 852153: I need to find the surface area for a prism. The height is 18.5, the width is 12 and the length is 6
Click here to see answer by josh_jordan(263)

Question 852398: I WANT TO CALCULATE DIA OF CYLINDER WHICH HAVING AREA OF 660cm2 . i also want to know if i want to make a machine for vertical loading of 350kg/cm2 then how i can calculate ram dia for vertical load and machine capacity?

Click here to see answer by Fombitz(32388)

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