the door in the diagram is made from a semicircle of radius r and a square with sides of length 2r. the perimeter of the door is 6.4m long.find the width of the door in cm.
please give me your answer fast
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the door in the diagram is made from a semicircle of radius r and a square with sides of length 2r. the perimeter of the door is 6.4m long.find the width of the door in cm.
please give me your answer fast
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Answer:
as you could see that the picture is made up of a semicircle and a square
area of square is side square
that is 4r square
use the formula of circumference 2pie r/2 because it js semicircle and put 6.8 on rhs
you will get the answer