Act Area, Perimeter, Circumference

The figure shows a circular well that has a diameter of 7 feet. What is the circumference of the well, in feet?

• 7/2 π

• 7π

• 49/4 π

• 14π

• 49π

Tags

CCSS.7.G.B.4

The perimeter of circular field is 500 feet. Which of the following is closest to the radius of the field, in feet?

• 10

• 50

• 80

• 160

• 250

Tags

CCSS.7.G.B.4

Circles A, B, and C have radii with measures of x centimeters, 3x centimeters, and 6x centimeters, respectively. What is the ratio of the radius of Circle B to the diameter of Circle C?

• 1:2

• 1:4

• 1:12

• 2:1

• 4:1

Tags

CCSS.7.G.A.1

A circle that lies on the standard (x,y) coordinate plane has its center at (8,-6) and passes through the origin. What is the area of this circle, in square coordinate units?

• 14π

• 20π

• 36π

• 64π

• 100π

Tags

CCSS.HSG.C.B.5

Richard brought his dog to the park and tied his leash to a flagpole while he had a picnic. The dog could reach 12 feet from the flagpole in any direction. What is the approximate area of the ground, in square feet, that the dog could reach from the flagpole?

• 19

• 38

• 75

• 113

• 452

Tags

CCSS.7.G.B.4

The figure shows a small circle with a diameter (line AC) and a large circle with a diameter (line AB) that is 32 inches long. Point C is the center of the large circle. What is the area, in square inches, of the small circle?

• 8π

• 16π

• 32π

• 40π

• 64π

Tags

CCSS.7.G.B.4

Rectangle ABCD. shown in the picture, has side lengths of 8 inches and 10 inches. What is the approximate area, rounded to the nearest whole number, of the largest circle that can fit within the rectangle ABCD?

• 25 sq. in.

• 50 sq. in.

• 62 sq. in.

• 200 sq. in.

• 314 sq. in.

Tags

CCSS.7.G.B.4

If the diameter of a circle is doubled, the area of the resulting circle is how many times the area of the original circle?

• 2

• 4

• 6

• 8

• 10

Tags

CCSS.7.G.B.4

What is the circumference?

• 48

• 96

• 24

• 18

Tags

CCSS.7.G.B.4

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

Tags

CCSS.7.G.B.4