Parts of a circle: radius, diameter, circumference and area
Grade 7 Math Worksheet
Circle the best answer, or write your answer on the line.
A round garden has a radius of 15 m. Ari walks along its edge through a central angle of 120°. How far does Ari walk? Use 3.14 for π.
A round skating rink is 24 m across. Bo glides along the edge through a central angle of 90°. How far is that? Use 3.14 for π.
A Ferris wheel has a radius of 20 m. Esme's seat moves through a central angle of 45°. How far does the seat travel? Use 3.14 for π.
Jun's pizza is 18 cm across. A slice has a central angle of 60°. How long is the crust of that slice? Use 3.14 for π.
Kira traces the whole edge of a half-circle window, the curve plus the straight bottom. It is 10 cm across the bottom. How long is the edge? Use 3.14 for π.
A half-circle window is 20 cm across its straight bottom. Luz wants trim for the whole edge, curve and bottom. How long must the trim be? Use 3.14 for π.
A cart wheel is 0.5 m across. How many full turns does it make while Pia pushes the cart 157 m? Use 3.14 for π.
Ren's unicycle wheel is 0.7 m across. How many full turns does it make over a ride of 21.98 m? Use 3.14 for π.
Tala's scooter wheel is 0.4 m across. How many full turns does it make over a ride of 62.8 m? Use 3.14 for π.
A wagon wheel is 0.6 m across. How many full turns does it make while Zee pulls the wagon 37.68 m? Use 3.14 for π.