Entry Task Review Area and Circumference of a Circle

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?

• c = 15π

• c = 2π15

• c = π(15²)

• c = π(7.5²)

Tags

CCSS.7.G.B.4

The diameter of Carol's old records from the 80s is 12 inches. Which equation would help you determine the area?

• A = 12π

• A = 2π12

• A = π(12²)

• A = π(6²)

Tags

CCSS.7.G.B.4

A minute hand (radius) of a clock is 13.8 meters long. What is the circumference of the clock?

• 86.66 meters

• 76.66 meters

• 66.66 meters

• 96.66 meters

Tags

CCSS.7.G.B.4

Find the Circumference (round to nearest tenth):
diameter = 12 in.

• 37.7 in.

• 37 in.

• 38 in.

• 75.4 in.

Tags

CCSS.7.G.B.4

Find the Circumference (round to nearest tenth):
diameter = 10 mi

• 31 mi

• 31.4 mi
  31.4 mi

• 31.5 mi
  31.5 mi

• 62.8 mi

Tags

CCSS.7.G.B.4

The radius of a circular clock is 13 centimeters. What is the area?

• 530.66 cm²

• 81.68 cm²

• 40.84 cm²

• 348.99 cm²

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2

• 15.3

• 124.2

• 113.1

Tags

CCSS.7.G.B.4

Find the Circumference (round to nearest tenth):
diameter = 5 km

• 15.6 km

• 15 km

• 15.7 km

• 31.4 km

Tags

CCSS.7.G.B.4

Find the Circumference (round to nearest tenth):
radius = 6 cm

• 37.7 cm

• 37.8 cm

• 37 cm

• 18.8 cm

Tags

CCSS.7.G.B.4

Find the Circumference (round to nearest tenth):
diameter = 4.5 cm

• 14.3 cm

• 14 cm

• 14.1 cm

• 28.3 cm

Tags

CCSS.7.G.B.4