Circles
Circles:
Fill in the blank
Fill in the blank
Area
Surface Area
Volume
100
Margo walks her dog around a perfectly circular pond with a diameter of 17 meters. What is the distance around the pond? Round to the nearest tenth.
C = 3.14*17
C = 53.4 meters
100
Circumference = 36 mm
Diameter = ?
Radius = ?
Round to the nearest hundredth.
Diameter = 11.46 mm
Radius = 5.73 mm
100
Find the ara of the compound shape.
Area = 34 ft2
100
Find the surface area of cube with a side length of 3 inches.
(3*3)*6
9*6
54 in2
100
A can of soup has a circumferene of 9.2 inches and a height of 5 inches. How much soup can fit in the can?Round to the nearest tenth.
V = 3.14 * r2 * h
V= 3.14 * 4.62 * 5
V = 3.14 * 21.15 * 5
V = 332.2 in3
200
A disc has a diameter of 9 cm. What is the area of the top of the disc? Round to the nearest tenth.
A = 3.14 * r2
A = 3.14 * 20.25
A = 63.585
A = 63.6 cm2
200
Diamter = 12 inches
Circumference = ?
Radius = ?
Circumference = 37.68 inches
Radius = 6 inches
200
Find the area of the compound shape.
Area = 102 ft2
200
Find the surface area of a triangular prism with a base of 4 feet, a height of 3 feet, and a hypotenuse of 5 feet, and a prism height of 20 feet.
(1/2)*4*3*2 = 12 (triangle bases)
(3+4+5)*20 = 240 (total faces)
252 ft2
200
Find the volume of a cone with a height of 7ft and a diameter of 6 ft. Round to the nearest tenth. Use 3.14 for pi.
65.9 ft2
300
Violet is crocheting a round potholder for her kitchen. The circumference of the potholder is 14 inches. What is the radius of the potholder? Round to the nearest hundredth.
C = 3.14 * (2r)
14 = 3.14 * 2r
14 = 6.28 * r
r = 2.23 inches
300
Radius = 2.54 miles
Circumference = ?
Diameter = ?
Round to the nearest hundredth.
Circumference = 15.95 miles
Diameter = 5.08 miles
300
Find the area of the 2D composite shape. Use 3.14 for pi.
25*20 + 1/2 * 25 * 10 + 1/2 * 3.14 * 102
500 + 125 + 157
782 m2
300
Alfonso is wrapping a hardcover book for his niece's birthday present. How much wrapping paper will he need to exactly cover the book?
2(12.5*10) + 2(12.5*2.5) + 2(10*2.5)
150 + 62.5 + 50
262.5 in2
300
Find the volume of a sphere with a diameter of 8.4 cm. Round to the nearest tenth. Use 3.14 for pi.
V = 310.2 cm3
400
Mrs. Kilian ordered two pizzas. The pepperoni pizza had a radius of 4 inches, while the veggie pizza had a radius of 9 inches. What is the difference in area between the two pizzas?
A1 = 3.14 * 42 = 3.14 * 16 = 50.24 in2
A2 = 3.14 * 92 = 3.14 * 81 = 254.34 in2
Difference = 254.34 - 50.24 =
204.1 in2
400
Radius = 72 feet
Area = ?
Diameter = ?
Round to the nearest integer.
Area = 16,278 feet2
Diameter = 144 feet
400
A landscaper wanted to lay patio bricks in a pattern shown below. The plan is drawn on a unit grid and each unit is equal to one square brick, each with the area of 1 square foot. The bricks cost $3.75 per one brick. How much will it cost to make this pattern on a patio?
4*4 + 4(0.5 * 4 *5)
16 + 4(10)
16 + 40
56 ft2
56 * $3.75 = $210
400
Mrs. Davis is making a wooden bookend for her new home library. She wants to stain it a dark color. How many square inches of stain will she need to completed cover the bookend?
(1/2)*12*5 *2 = 60 (2 triangles)
(4*12) + (4*13) + (5*4) = 120 (3 lat faces)
180 in2
400
If a silo has a circumference of 94.2 cm and a total height of 126.7 cm, what is the total volume of the silo?
85,981.05 cm3
500
Ms. B is making frosted donuts. Each donut has a total diameter of 5 inches. The hole in the middle has a diamter of 1.5 inches. What is the surface area of the donut that needs frosting? Round to the nearest hundredth.
A = 17.86 in2
500
Area = 1,256 yds2
Diameter = ?
Radius = ?
Radius = 20 yards
Diameter = 40 yards
500
Ms. Espindola's living room is 15 ft by 13 ft. She bought an area rug that is 8 ft by 10 ft. What is the area of the uncovered part of her floor?
Area = 115 ft2
500
What is the surface area of the bird house before the circular hole is cut?
SA = 3,720 cm2
500
"Billy's Best Birthday Bundle for Birthday Boys" has the "Hilarious Happy Humor Hat for Hugely Happy Humans" in the Kit. Find the total volume of the "Hilarious Happy Humor Hat for Hugely Happy Humans". The diameter of the cone is 8 inches. The diameter of the sphere is 6 inches. The cone is 24 inches high. Only use 3.14 fo Pi
514.96 in3