GRADED ASSESSMENT #6: Circles

The diameter of a circle is 5.1 cm. Find the circumference of the circle. Use pi = 3.14. Round to the nearest whole number. Put only the number in the blank. *

Answer explanation

To find the circumference, C = pi x d = 3.14 x 5.1 = 16.014 = 16

Tags

CCSS.7.G.B.4

2. The CIRCUMFERENCE of the bike tire is 43.96 in. What is the DIAMETER? Use 3.14 for π.

Answer explanation

$d=C\div\pi\ \ \ \ d=43.96\div3.14\ \ \ \ d=14$

Tags

CCSS.7.G.B.4

The radius of a circle is 3.2 mm. What is its area? Use pi = 3.14. Round your answer to the nearest tenth. Put only the Number in the answer blank.

Answer explanation

To find the area of a circle use A = pi x r squared. So A = 3.14 x 3.2 x 3.2 = 32.1536. Round to the nearest tenth = 32.2

Tags

CCSS.7.G.B.4

The AREA of a large pizza is 153.86 square inches. What is the RADIUS? Use 3.14 for π.

Tags

CCSS.7.G.B.4

The CIRCUMFERENCE of the trampoline is 47.1 feet. What is the RADIUS? Use 3.14 for π.

• 7.5 feet

• 15 feet

• 43.96

• 147.89

Tags

CCSS.7.G.B.4

Mr. Sniegoski just built a circular patio in his backyard that has an AREA of 28.26 square units. What is the RADIUS of the patio? Use 3.14 for π.

• 2

• 3

• 6

• 9

Tags

CCSS.7.G.B.4

The Circumference of a clock is 56.35 inches. What is the radius of the clock. Use 3.14 for π. Round you answer to the nearest whole number.

• 8 inches

• 9 inches

• 18 inches

• 53.38 inches

Tags

CCSS.7.G.B.4

The AREA of a manhole cover is 12.56 square feet. What is the RADIUS of the manhole? Use 3.14 for π.

• 2 feet

• 4 feet

• 9.42 feet

• 8 feet

Tags

CCSS.7.G.B.4

The CIRCUMFERENCE of a ping pong ball is 125.6 mm. What is the DIAMETER of the ping pong ball? Use 3.14 for π.

• 40 mm

• 20 mm

• 62.8 mm

• 251.2 mm

Tags

CCSS.7.G.B.4

The CIRCUMFERENCE of a ping pong ball is 125.6 mm. What is the RADIUS of the ping pong ball? Use 3.14 for π.

• 31.4 mm

• 20 mm

• 105.6 mm

• 10 mm

Tags

CCSS.7.G.B.4