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 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.
The top of Milo's doorway is a half circle 6 ft across. How long is the whole edge, the curve plus the straight bottom? 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.