Q.56. If the radius of a circle is doubled, its area increases by:
A. 100%
B. 200%
C. 300%
D. 400%
Answers
Answered by
1
Answer:
D.400%
Step-by-step explanation:
1st area: πr*2
2nd area :4πr*2
1st area/2nd area ×100%=400 %
Answered by
1
Answer:
option (,D)
Step-by-step explanation:
let r=@
area=22/7×@×@
if r is doubled
area (new)=22/7×2@×2@
=4×area
therefore the area increased by 400%
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