Estimating Area of Circle

A community centre has a children's wading pool in its courtyard. Which is the closest estimate to the area of the courtyard surrounding the pool?

• 237 m²

• 240 m²

• 243 m²

• 246 m²

Find the area of circle B that is NOT covered by circle A. (hint: take away the area of circle A from circle B)

• 50.27

• 12.57

• 37.7

• 9

Find the area of the shaded region

• 100π - 200 sq units

• 100π - 100 sq units

• 100π sq units

• 200 - 100π sq units

You Try #1: A circular garden is surrounded by a cement path as shown in the following diagram. What is the area of the cement path?

Find the area of the circle.

• 118.84 m²

• 113.04 m²

• 137.68 m²

• 124.16 m²

Find the area of the circle, giving your answer to 1 decimal place.

• 113.1cm²

• 28.3cm²

• 6.3cm²

• 37.7cm²

A baker is making a giant pizza with a diameter of 42 inches. a large jar of tomato sauce can cover 90 square inches of pizza. How many jars of tomato sauce does the baker need to buy to cover all the pizza?

Mathematical Equivalence

ON

What is the area of this circle?

• 62.59 cm²

• 113.1 cm²

• 19.81 cm²

• 28.26 cm²

A dog is tied to a wooden stake in a backyard. His leash is 3 meters long and he runs around in circles pulling the leash as far as it can go. How much area does the dog have to run around in?

• 113.04 square meters

• 9.42 square meters

• 18.84 square meters

• 28.26 square meters

Find the area of the figure.

• 452

• 113

• 1390

• 50.3