01-03-2017
Mathematics

contestada

please help me!!!!!!!!!

please help me class=

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haruyoshida91 haruyoshida91

01-03-2017

use the formula for finding the area of a semi circle pi * r^2
the radius is half the diameter, the diameter is given because a rectangle has 2 pairs of equal sides

1) pi * 2.5^2=pi* 6.25

2) pi * 7^2= pi* 49

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student555 student555

01-03-2017

area rectangle=70cmsq
area small hemisphere=235.5cmsq
area big hemisphere=1846.32cmsq
adding all
2151.82 cmsq

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