Q: What is the area of a circle of circumference 32 cm?

Area = (Circumference) 2 /(π × 4) = (32) 2 /(4*3.14) = 81.49 cm 2 Alternatively, Find the radius first, Circumference = 2 × π × radius radius = (Circumference)/(2 × π) = 32/(2 × 3.14) radius = 5.10 cm Area = π × radius 2 = 3.14 × 5.10 × 5.10 Area = 81.67 cm

Q: What is the area of a circle of radius 2 cm?

Area = π × radius 2 = 3.14 × 2 × 2 Area = 12.57 cm Fun Fact: Area and Circumference are equal for a circle of radius 2 cm.

Q: What is the area of a circle of diameter 8 cm?

Area = π × (Diameter/2) 2 = 3.14 × 8 Circumference = 50.27 cm

Question 1

What is the formula to calculate area of a circle?

Accepted Answer

Formula for the area of a circle depends on what is given to you.

1) Given: Diameter of a circle

Then, Area = π × (Diameter/2)²

2) Given: Radius of a circle

Then, Area = π × (Radius)²

3) Given: Circumference of a circle

Then, Area = (Circumference)²/(π × 4)

Question 2

What is the area of a circle of circumference 32 cm?

Accepted Answer

Area = (Circumference)²/(π × 4)

= (32)²/(4*3.14)

= 81.49 cm²

Alternatively,

Find the radius first,

Circumference = 2 × π × radius

radius = (Circumference)/(2 × π)

= 32/(2 × 3.14)

radius = 5.10 cm

Area = π × radius²

= 3.14 × 5.10 × 5.10

Area = 81.67 cm

Question 3

What is the area of a circle of radius 2 cm?

Accepted Answer

Area = π × radius²

= 3.14 × 2 × 2

Area = 12.57 cm

Fun Fact: Area and Circumference are equal for a circle of radius 2 cm.

Question 4

What is the area of a circle of diameter 8 cm?

Accepted Answer

Area = π × (Diameter/2)²

= 3.14 × 8

Circumference = 50.27 cm

Calculator: Area of Circle

Calculate the Area of a Circle