Area and Surface Area

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for the area of a circle?

Back

Area = π × radius²

Front

What is surface area?

Back

The sum of all the areas of all the shapes that cover the surface of the object.

Front

What is the diameter of a circle?

Back

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

Front

How do you find the radius of a circle if you know the diameter?

Back

Radius = diameter / 2

Front

What is the height of a shape?

Back

The perpendicular distance from the base to the top of the shape.

Front

What is the area of a square with a side length of 5 inches?

Back

Area = 5 inches × 5 inches = 25 square inches.

Front

If a rectangle has a length of 10 cm and a width of 4 cm, what is its area?

Back

Area = 10 cm × 4 cm = 40 square cm.

Front

What is the surface area of a cube with a side length of 3 cm?

Back

Surface Area = 6 × (side length)² = 6 × (3 cm)² = 54 square cm.