Area of Circles and Composite Figures

Front

What is the diameter of a circle?

Back

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

Tags

CCSS.HSG.C.A.2

Front

What is the radius of a circle?

Back

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

Front

How do you calculate the area of a circle?

Back

Area = π × radius².

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi)?

Back

π (pi) is approximately 3.14.

Tags

CCSS.HSG.GMD.A.1

Front

What is the area of a circle with a radius of 7 cm?

Back

Area = π × (7 cm)² = 154 cm² (approximately).

Tags

CCSS.7.G.B.4

Front

What is a composite figure?

Back

A composite figure is a shape that is made up of two or more simple shapes.

Tags

CCSS.1.G.A.2

Front

How do you find the area of a composite figure?

Back

To find the area, calculate the area of each simple shape and then sum them up.

Tags

CCSS.3.MD.C.7D

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Tags

CCSS.6.G.A.1

Front

If a triangle has a base of 6 in and a height of 4 in, what is its area?

Back

Area = 1/2 × 6 in × 4 in = 12 in².

Tags

CCSS.6.G.A.1

Front

What is the area of a circle with a diameter of 10 cm?

Back

Radius = 5 cm; Area = π × (5 cm)² = 78.5 cm² (approximately).

Tags

CCSS.7.G.B.4