Tutors Answer Your Questions about Surface-area (FREE)
Question 1185051: A ladder is 25 cm long leans against a vertical wall so that the base of the ladder
is 7 m from the foot of the wall. If the top of the ladder slides 4 m down the wall,
by how many meters will the base of the ladder move away from the foot of the
wall?
Click here to see answer by ikleyn(52786)  |
Question 1185393: In the figure, O and O' are the centres of the bigger and smaller circles respectively. The smaller circle touches the square ABCD at the midpoint of side AD. The radius of the bigger circle is 30 cm and the side of the square ABCD is 36 cm. Find the radius of the smaller circle.
F
A. 9.25 cm
B. 9 cm
C. 9.45 cm
D. IOcm
Click here to see answer by ikleyn(52786)  |
Question 1185499: A factory is to be built on a lot measuring 270 ft by 360 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must surround the factory.
What must the width of the lawn be? ?
If the dimensions of the factory are A ft by B ft with A
and B= ?
Click here to see answer by josgarithmetic(39617) |
Question 1185499: A factory is to be built on a lot measuring 270 ft by 360 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must surround the factory.
What must the width of the lawn be? ?
If the dimensions of the factory are A ft by B ft with A
and B= ?
Click here to see answer by ikleyn(52786)  |
Question 1185499: A factory is to be built on a lot measuring 270 ft by 360 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must surround the factory.
What must the width of the lawn be? ?
If the dimensions of the factory are A ft by B ft with A
and B= ?
Click here to see answer by greenestamps(13200)  |
Question 1185499: A factory is to be built on a lot measuring 270 ft by 360 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must surround the factory.
What must the width of the lawn be? ?
If the dimensions of the factory are A ft by B ft with A
and B= ?
Click here to see answer by MathTherapy(10552)  |
Question 1186651: A square plot of land which has a building 60 ft long and 40 ft wide at one corner. The rest of the land outside the building forms a parking lot. If the parking lot has area 12000 ft^2, what are the dimensions of the entire plot of land?
Click here to see answer by josgarithmetic(39617) |
Question 1186651: A square plot of land which has a building 60 ft long and 40 ft wide at one corner. The rest of the land outside the building forms a parking lot. If the parking lot has area 12000 ft^2, what are the dimensions of the entire plot of land?
Click here to see answer by greenestamps(13200)  |
Question 1187460: In the diagram below, EFGH is a rhombus formed by connecting the midpoints of the sides of the rectangle ABCD. The rectangle is circumscribed by the circle with centre O. Find the area, in cm^2 of the rhombus if Line OF=12 cm, and Line JH=4 cm
Diagram:
https://ibb.co/7RjGv8P
Click here to see answer by ikleyn(52786)  |
Question 1188319: In the diagram, the ratio of the areas of △BED:△DFC is 1:4. If the area of △ABC is 84 cm^2, then the area of parallelogram AEDF, in cm^2 is...
A) 36 and 1/4 B) 39 and 2/3 C) 40 and 3/4 D) 37 and 1/3 E) 38 and 1/3
https://ibb.co/YcFWXMT
Click here to see answer by greenestamps(13200)  |
Question 1189225: A pool is twice as long as it is wide and is surrounded by a walkway of uniform width of 1 foot. The combined area of the pool and the walkway is 400 square feet.
Find the dimensions of the pool and the area of the pool,
Click here to see answer by ikleyn(52786)  |
Question 1189358: You have developed a new specialty candy for Dare and have decided to package it using a hexagonal box as shown, with lid and base regular hexagons. Calculate the cost of each package if the material costs $0.07/100cm2.
This is a box in the shape of a hexagonal prism with a height of 6cm and a distance between direct opposite lid corners of 8 cm.
Volume is 432 cm3.
Click here to see answer by greenestamps(13200)  |
Question 1189476: In the diagram below, AEFD is a rectangle. G and H are midpoints of
Line EK and Line FK respectively, and K is the midpoint of Line AD.
If the area of the shaded region is 45 cm^2, what is y, in cm?
Diagram: https://imgur.com/a/NJ9cV1f
Click here to see answer by Edwin McCravy(20056)  |
Question 1189543: Boris has 320 meters of fencing. He will use it to form three sides of a rectangular garden. The fourth side will be along a house and will not need fencing.
(a) Find a function that gives the area A (x) of the garden (in square meters) in
terms of x.
A(x) =?
(b) What side length x gives the maximum area that the garden can have?
Side length x : ? meters
(c) What is the maximum area that the garden can have?
Maximum area: ? square meters
Click here to see answer by ikleyn(52786)  |
Question 1190492: In order to compute the area of a particular circle, Juan first measures the length of its diameter. The actual diameter is 20 cm, but Juan's measurement has an error of up to 20%. What is the largest possible percent error, in percent, in Juan's computed area of the circle?
Click here to see answer by Theo(13342)  |
Question 1190966: Dustin wants to create a large mural to cover part of his wall. He drew a sketch of his design to determine the amount of canvas he needs. The area of the design was 0.3 square feet. If the actual mural will have dimensions 5 times that of the design, how many square feet of canvas will Dustin need?
Click here to see answer by greenestamps(13200)  |
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