Parts of a Circle, Area, Circumference

The radius of a circle is 9 mm. What is the circle’s diameter?

• 4.5 mm

• 18 mm

• 36 mm

• 18π mm

Tags

CCSS.7.G.B.4

The diameter of a circle is 25 cm. What is the circle’s radius?

• 12.5 cm

• 50 cm

• 5 cm

• 25π cm

Tags

CCSS.7.G.B.4

The radius of a circle is 6 m. What is the area of the circle in terms of π?

• 6π m²

• 12π m²

• 24π m²

• 36π m²

Tags

CCSS.7.G.B.4

The area of a circle is 1296π in². What is the diameter of the circle?

• 36 in

• 18 in

• 9 in

• 72 in

Tags

CCSS.7.G.B.4

The diameter of a circle is 12.5 km. What is the circumference of the circle in terms of π?

• 6.25π km

• 156.25π km

• 25π km

• 12.5π km

Tags

CCSS.7.G.B.4

The circumference of a circle is 15.5π mm. What is the radius of the circle?

• 3.94 mm

• 15.5 mm

• 31 mm

• 7.75 mm

Tags

CCSS.7.G.B.4

A circle has a diameter of 26 units. What is the area of the circle to the nearest hundredth of a square unit?

• 81.68

• 530.93

• 2123.72

• 8494.87

Tags

CCSS.7.G.B.4

Kiyo used wire fencing to form a border around a circular region in his back yard. If the radius of the circular region was 5 yards, what was the total length of the border, rounded to the nearest tenth of a yard?

• 15.7

• 31.4

• 78.5

• 157.1

Tags

CCSS.7.G.B.4

Which statement correctly describes how the area of the round pan compares to the area of the rectangular pan?

• The area of the round pan is greater than the area of the rectangular pan by about 8.5 square inches.

• The area of the round pan is greater than the area of the rectangular pan by about 244.2 square inches.

• The area of the round pan is less than the area of the rectangular pan by about 7.2 square inches.

• The area of the round pan is less than the area of the rectangular pan by about 38.6 square inches.

Tags

CCSS.7.G.B.4

The mean radius of Earth is 6,371.0 km and the mean radius of Earth's Moon is 1,737.5 km. What is the approximate difference in the mean circumferences, in km, of Earth and Earth's Moon?

• 40,030.2

• 29,113.1

• 14,556.6

• 10,917.0

Tags

CCSS.6.NS.B.3