Unit 5 Review

Front

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

Back

Area = π × r², where r is the radius.

Front

If a circular rug has a diameter of 8 feet, what is its radius?

Back

The radius is 4 feet (radius = diameter / 2).

Front

What is the area of a circle with a radius of 4 feet?

Back

Area = π × (4)² = 50.24 square feet.

Front

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

Back

Circumference is the distance around the circle.

Front

How do you calculate the circumference of a circle?

Back

Circumference = 2 × π × r.

Front

What is the surface area of a rectangular prism with dimensions 4 cm, 5 cm, and 6 cm?

Back

Surface Area = 2(lw + lh + wh) = 2(4*5 + 4*6 + 5*6) = 148 cm².

Front

What is the difference between area and perimeter?

Back

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

Front

If a pizza has a diameter of 9 inches, what is the area of the whole pizza?

Back

Area = π × (4.5)² = 63.59 square inches.

Front

If Gavin ate a quarter of a pizza with an area of 63.59 square inches, how much pizza did he eat?

Back

He ate 15.90 square inches.

Front

What is the area of a shaded region if the total area is 120 m² and the unshaded area is 14 m²?

Back

Area of shaded region = Total area - Unshaded area = 120 m² - 14 m² = 106 m².