Nitin T F1 fan
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c=3______________ c=4
3=2*22/7r_________ 4=2*22/7r
r=3 ______________ r=4
area=22/7*9 ________area=22/7*16
9______________ : 16
9:16
Anonymous
9:16
Anonymous
first find the ratio of the radius by the formula of circumference. then putting the ratio of radius [(3:4) same as of circumference] on the formula of area . u will get the answer 9:16
Anonymous
9:16
Anonymous
C = 2 pi r
C[1] = 2 pi r[1]
C[2] = 2 pi r[2]
If we divide
C[1]/C[2] = r[1]/r[2] = 3/4
A[1] = pi r[1]^2
A[2] = pi r[2]^2
If we divide
A[1]/A[2] = r[1]^2/r[2]^2 = (r[1]/r[2])^2 = (3/4)^2= 9/16
A[1] : A[2] = 9: 16