6th math

Front

What is the formula to find the diameter of a circle if the radius is known?

Back

Diameter = 2 × Radius

Front

If the radius of a circle is 10 ft, what is the diameter?

Back

20 ft

Front

What is the formula to calculate the area of a circle?

Back

Area = π × Radius²

Front

If the radius of a circle is 10 ft, what is the area? (Use π ≈ 3.14)

Back

Area = 3.14 × (10)² = 314 ft²

Front

What is the circumference of a circle?

Back

Circumference = 2 × π × Radius

Front

If the diameter of a bowl is 14 cm, what is the circumference? (Use π ≈ 3.14)

Back

Circumference = 2 × 3.14 × (14/2) = 43.96 cm

Front

What is the radius of a circle?

Back

A line from the center of the circle to any point on its edge.

Front

If the area of a circle is 254.34 cm², what is the radius? (Use π ≈ 3.14)

Back

Radius = √(Area/π) = √(254.34/3.14) ≈ 9 cm

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius.

Front

If a circle has a diameter of 20 ft, what is the radius?

Back

10 ft