Question

Area of a circle is 49 times the area of another circle with raduis 3cm. Find the radius of the biggest circle​

Answer 1

Answer:

Circle

Solve for radius

r≈3.95

A Area

49

Unit Conversion:

Using the formula

A=πr2

Solving forr

r=A

π=49

π≈3.94933

Answer 2

Answer:

52.5 cm

Step-by-step explanation:

let , area of smaller circle =x

then area of biggest circle =49x

radius of smaller circle = 3cm

so, x= 22/7×3×3

x= 28.2

it means area of smaller circle = 28.2

now,

area of biggest circle =28.2×49

= 1381

so, radius of biggest circle =

1381=22/7×x square

1381×2/22= x square

2762 =x square

x=52.5

so radius of biggest circle = 52.2 cm

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