Question

the radius of two circles is in the ration 2:3. The ratio of their areas is

Answer 1

Answer:

4 : 9

Explanation:

The ratio of radius of the circle is 2 : 3

Let's assume the radius of one is 2x and another is 3x

Area of the first circle = πr²

Where,

• r(radius) = 2x

So,

→ π(2x)²

→ 4πx²

And also, area of the another circle = πr²

Where, ‘r’ will be 3x

→ π(3x)²

→ 9πx²

Their ratio :

→ 4πx² : 9πx²

→ 4 : 9

Required answer : 4 : 9

Answer 2

Answer:

4:9

Step-by-step explanation:

let assume that 2 circles is r¹&r²

then, given

2πr¹÷2πr²=2/3

gives r¹ /r² =2/3

after squaring both the side, we get

r1²/r2²=4/9

gives__-πr1²/π2²= 4/9

so the ratio of the two circle areas is 4:9

~{please assume this( / )as upon}~