Number of can needed to paint inside of the circular helicopter pad = 1
The circular pad is given to be 50 feet across.
⇒ Circumference of the circular pad = 50 feet
⇒ 2π·r = 50
⇒ π·r = 25
⇒ r = 7.96 feet
Now, Area of the circular pad = π·r²
⇒ Area = 3.14 × 7.96²
⇒ Area = 198.96 square feet
Now, one can of paint covers 200 feet² area of the pad
Hence, 198 feet² area can also be painted by using one can.
Therefore, number of can needed to paint inside of the circular helicopter pad = 1
number of paints needed is approximately 10 cans
if the pad is 50 feet across that is the diameter of the circular pad is 50 feet.
therefore to get the cans of paints needed we need to first find the area of the circular pad which is :
area of a circle = π
diameter = 50, radius = 50 / 2 = 25
area = 22/7 * = 1964.29 ft squared
where each paint covers 200ft squared
therefore to get the number of paints needed we will divide
1964.29 / 200 = 9.82 ≅ 10
You need to find the area of the circular pad.
Circle Area= πr^2
we need the radius which is half of the diameter given
=1,963.495 ft^2 total area
Find how much paint is needed by dividing a can's coverage into what's needed.
=1963.495 ÷ 200
=10 cans are needed (because you cannot buy a part of a can, you need to round up)
ANSWER: 10 cans are needed
Hope this helps! :)