Can someone please help me with this question?
Find:
(i) the area
(ii) the perimeter
Explain each and every step.
Thanks for helping! :)
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Answer:
(i) the area 153.94 cm^2
(ii) the perimeter is 87.94 cm
Step-by-step explanation:
perimeter of 1st small circle= 2πr/2=πr
r= 7 cm
perimeter= πr= π*7
= 21.98 cm
perimeter of 2nd small circle= 2πr/2=πr
r= 7 cm
perimeter= πr= π*7
= 21.98 cm
perimeter of big circle= 2πr/2=πr
r= 14 m
perimeter= πr= π*14
= 43.96 cm
total perimeter= 21.98+21.98+43.96= 87.94 cm
area of 1st small circle= πr^2/2
r=7 cm
area= πr^2/2
=π*7^2/2
= π*49/2
= 76.96 cm^2
area of 2nd small circle= πr^2/2
r=7 cm
area= πr^2/2
=π*7^2/2
= π*49/2
= 76.96 cm^2
area of big circle= πr^2/2
r=14 cm
area= πr^2/2
=π*14^2/2
= π*196/2
= 307.86 cm^2
total area= 307.86-76.96-76.96 cm^2
= 153.94 cm^2
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