Circumference

What is D?

• chord

• radius

• center

Answer explanation

In geometry, 'D' typically refers to the center of a circle, which is the point equidistant from all points on the circumference. Therefore, the correct answer is 'center'.

What is FG?

• diameter

• center

• radius

Answer explanation

FG refers to the diameter of a circle, which is the longest distance across the circle, passing through the center. The other options, center and radius, do not represent FG correctly.

The diameter of a circle is 8 miles. What is the circle's circumference? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 25.12

• 20.00

• 30.00

• 50.24

Answer explanation

To find the circumference, use the formula C = πd. Here, d = 8 miles. So, C = 3.14 * 8 = 25.12 miles. Thus, the correct answer is 25.12.

Tags

CCSS.7.G.B.4

The radius of a circle is 4 feet. What is the circle's circumference? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 25.12

• 20.00

• 30.00

• 15.00

Answer explanation

To find the circumference of a circle, use the formula C = 2πr. Here, r = 4 feet. So, C = 2 × 3.14 × 4 = 25.12 feet. Thus, the correct answer is 25.12.

Tags

CCSS.7.G.B.4

Elijah is making a circular garden and wants to put a fence around it. The circumference of the garden is 50.24 inches. What is the garden's diameter? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 16.00

• 15.00

• 14.00

• 17.00

Answer explanation

To find the diameter, use the formula: diameter = circumference / π. Here, diameter = 50.24 / 3.14 ≈ 16.00 inches. Thus, the correct answer is 16.00.

Tags

CCSS.7.G.B.4

Benjamin is planning to build a circular garden in his backyard. The circumference of the garden is 69.08 yards. What is the radius of the garden? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 11.00

• 10.00

• 22.00

• 13.00

Answer explanation

To find the radius, use the formula C = 2πr. Rearranging gives r = C/(2π). Substituting C = 69.08 and π ≈ 3.14, we get r ≈ 11.00 yards. Thus, the radius is 11.00 yards.

Tags

CCSS.7.G.B.4

The circumference of a circular garden is 232.36 millimeters. What is the garden's radius? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 37.00

• 36.00

• 70.00

• 74.00

Answer explanation

To find the radius, use the formula C = 2πr. Rearranging gives r = C/(2π). Substituting C = 232.36 and π ≈ 3.14, we get r ≈ 37.00 mm. Thus, the radius is 37.00 mm.

Tags

CCSS.7.G.B.4

The circumference of a circle is 131.88 yards. What is the circle's diameter? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 42.00

• 12.00

• 10.00

• 50.00

Answer explanation

To find the diameter, use the formula: diameter = circumference / π. Here, diameter = 131.88 / 3.14 ≈ 42.00 yards. Thus, the correct answer is 42.00.

Tags

CCSS.7.G.B.4

Ava is making a circular garden with a diameter of 12 centimeters. What is the garden's circumference? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 35.00

• 37.68

• 38.00

• 36.00

Answer explanation

To find the circumference, use the formula C = πd. Here, d = 12 cm. Thus, C = 3.14 * 12 = 37.68 cm. Rounding to the nearest hundredth gives 37.68, which is the correct answer.

Tags

CCSS.7.G.B.4

The radius of a circle is 7 meters. What is the circle's circumference? Use π ≈ 3.14 and round your answer to the nearest hundredth.

• 42.00

• 44.00

• 43.96

• 45.00

Answer explanation

To find the circumference of a circle, use the formula C = 2πr. Here, r = 7 meters. Thus, C = 2 × 3.14 × 7 = 43.96 meters. The correct answer is 43.96.

Tags

CCSS.7.G.B.4