Finding Radius when Given Area

Front

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

Back

Area = π × r², where r is the radius.

Front

If the area of a circle is 452.16 yd², what is the radius?

Back

12 yd

Front

What is the relationship between radius and diameter?

Back

Diameter = 2 × Radius.

Front

If the area of a circle is 50.24 yd², what is the radius?

Back

4 yd

Front

What is the area of a circle with a radius of 5 yd?

Back

Area = π × (5)² = 25π ≈ 78.54 yd².

Front

What does the term 'radius' refer to in a circle?

Back

The radius is the distance from the center of the circle to any point on its circumference.

Front

What does the term 'diameter' refer to in a circle?

Back

The diameter is the distance across the circle through its center, equal to twice the radius.

Front

If the radius of a circle is 7 cm, what is the area?

Back

Area = π × (7)² = 49π ≈ 153.94 cm².

Front

What is the radius of a circle with an area of 706.5 cm²?

Back

15 cm

Front

How do you convert area to radius?

Back

Radius = √(Area/π).