The diameters of two circles are 12 and 9 what the difference in square centimeters between the areas of the two circles

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brightediomo1
4 months ago

Светило науки - 69 ответа - 0 помощи
**Step-by-step explanation:**

### Area of circle= π(d/2)²

For 1st Circle, A1= 36π

For 2nd Circle, A2= 81π/4

A1-A2 = 63π/4

π = 22/7

=49.5unit²

The differences in the areas of circles in square centimeters is

49.455Formula for area of circleWhere,

A is the area of circle

r is the radius of circle

and π = 3.14

## What is radius of a circle ?

Radius of circle is the distance from the center of the circle to any point on it's circumference. It is calculated as :

According to the given question

Diameter of one circle is 12cm and diameter of another circle 9cm.

Area of circle with diameter 12 cm = = = 113.04 square cm

Area of circle with diameter 9 cm = square cm

Therefore,

The

difference between the areas of two circles= (113.04 -63.585) square centimeter =49.455square centimeter.Learn more about the

area of circlehere:#SPJ2