Geometry and Measurement

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius of the circle.

Front

How do you find the height of a tall object using a mirror?

Back

Stand at a distance where you can see the top of the object in the mirror. The height of the object is equal to your height multiplied by the ratio of the distance to the mirror and your distance from the mirror.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the circumference of a circle?

Back

Circumference = πd, where d is the diameter of the circle.

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around a shape.

Front

How do you calculate the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height.

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × radius.

Front

How do you convert square feet to square inches?

Back

Multiply the area in square feet by 144 (since 1 square foot = 144 square inches).

Front

What is the formula for the volume of a rectangular prism?

Back

Volume = length × width × height.