the area of circular ring is 90 m square. if the radius of the outer circle is 7 metre, what is the radius of inner circle
Answers
Answered by
7
hope this ll be helpful for u
Attachments:
ujjawal75:
I thought your answer is wrong
Oh I m sorry if it wrong
I tried my best.
the answer is 4.51cm
does it match with the answer in ur book?
let me recheck it!.
in my book the answer is 4.51m
ok
The correct ans is with me..but I. unable to answer
Answered by
8
Answer:
area of circular ring = 90m²
radius of outer circle= 7m
radius of inner circle=?
outer area = pie r²
=22/7×7×7
=154m²
inner area= outer area - area of ring
=154-90
=64m²
64=pie r²
64=22/7 ×r²
r²= 64×7/22
r² = 448/22
r²= 20.36
r= root 20.36
r= 4.51m (aNs)
hope it hlps uh....
follow fir follow back....
Similar questions