Area of a Circle

Front

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

Back

The area of a circle is calculated using the formula A = πr², where A is the area and r is the radius.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 50 yards, what is the radius?

Back

The radius is 25 yards, as the radius is half of the diameter.

Tags

CCSS.7.G.B.4

Front

Define the term 'diameter' in relation to a circle.

Back

The diameter is a line segment that passes through the center of the circle and connects two points on its circumference.

Tags

CCSS.HSG.C.A.2

Front

What is the area of a circle with a radius of 21 cm?

Back

The area is approximately 1384.74 cm².

Tags

CCSS.7.G.B.4

Front

How do you convert diameter to radius?

Back

To convert diameter to radius, divide the diameter by 2.

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi) used in calculations?

Back

The value of π (pi) is approximately 3.14 or 22/7.

Tags

CCSS.HSG.GMD.A.1

Front

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

Back

The area is approximately 153.94 cm², calculated using A = π(7)².

Tags

CCSS.7.G.B.4

Front

What is the relationship between radius and diameter?

Back

The radius is half the length of the diameter.

Tags

CCSS.7.G.B.4

Front

How do you find the area of a circle if only the diameter is given?

Back

First, divide the diameter by 2 to find the radius, then use the formula A = πr².

Tags

CCSS.7.G.B.4

Front

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

Back

The area is approximately 78.54 cm².

Tags

CCSS.7.G.B.4