## If the ratio of the radii of two spheres is 2:3, the ratio of their surface areas will be 8:27. true or false?

October 13, 2019// Blog//

**Answer:**

The area of a circle is 20.41 units.

**Step-by-step explanation:**

Formula

Where r is the radius of a circle.

As given

**First take when the radius of a circle is 2 unit.**

radius = 2 units

Put in the formula

= 12.56 unit

**Second take when the radius of a circle is 3 unit.**

radius = 3 units

Put in the formula

= 28.26 unit

As given

The area of a circle whose area equals the half of the sum of the areas of two circles with radii 2 and 3.

Put the value in the above

Area of a circle = 20.41 units

Therefore the area of a circle is 20.41 units.