Circumference
C = 3.14 x 8
C = 25.12 cm²
Find the area of a circle that has a radius of 4 cm.
A = 3.14 x r²
A = 3.14 x 4²
A = 3.14 x 16
A = 50.24 cm²
A rectangular prism has a length of 5 cm, width of 4 cm, and height of 8 cm. What is the volume of the box?
V = lwh
V = 5 x 4 x 8
V = 160 cm³
A cylinder has a radius of 4 cm and height of 10 cm. What is the volume?
V = 3.14 x r² x h
V = 3.14 x 4² x 10
V = 502.4 cm³
A circle has a radius of 7 cm. What is the diameter?
D = 2r
D = 14 cm
Find the circumference of a circle that has a diameter of 12m.
C = 3.14 x 12
C = 37.68 m²
Find the area of a circle that has a radius of 10 in.
A = 3.14 x 10²
A = 3.14 x 100
A = 314 in²
V = lwh/2
V = 4 x 5 x 11/2
V = 220/2
V = 110 in³
A cylinder has a radius of 6 in and height of 5 in. What is the volume?
V = 3.14 x r² x h
V = 3.14 x 6² x 5
V = 565.2 in³
A circle has a diameter of 100 in. What is the radius?
R = d/2
R = 50 in
Find the circumference of a circle that has a radius of of 5 in. (Hint: find the diameter first!)
D = 5 x 2 = 10
C = 3.14 x 10
C = 31.4 in²
Find the area of a circle that has a diameter of 6 ft (hint: cut in half for the radius)
R = 3 ft
A = 3.14 x r²
A = 3.14 x 3²
A = 3.14 x 9
A = 28.26 ft²
A rectangular prism has a length of 10.5 m, width of 2 m, and height of 3.5 m. What is the volume?
V = lwh
V = 10.5 x 2 x 3.5
V = 73.5 m³
A cylinder has a radius of 2 m and a height of 12 m. What is the height?
V = 3.14 x r² x h
V = 3.14 x 2² x 12
V = 150.72 m³
Find the volume of a cylinder that has a radius of 1 in and a height of 8 in.
V = 3.14 x r² x h
V = 3.14 x 1² x 8
V = 25.12 in³
Find the circumference of a circle that has a radius of 10 ft. (Hint: Double to find the diameter!)
D = 10 x 2 = 20
C = 3.14 x 20
C = 62.8 ft²
Find the area of a circle that has a diameter of 2 cm. (Hint: cut in half to find the radius!)
R = 1 cm
A = 3.14 x r²
A = 3.14 x 1²
A = 3.14 cm²
A triangular prism has a base of 4 ft, height of 2.5 ft, and width of 10 ft. What is the volume?
V = lwh/2
V = 4 x 2.5 x 10/2
V = 90/2
V = 45 ft³
A cylinder has a radius of 10 cm and a height of 7 cm. What is the volume?
V = 3.14 x r² x h
V = 3.14 x 10² x h
V = 2,198 cm³
The circumference of a circular swimming pool is about 47.1 feet. What is the diameter of the pool?
C = 3.14 x D
47.1 ft² = 3.14D
D = 15 ft
Find the circumference of a circle that has a radius of 20 in. (Hint: double to find the diameter!)
D = 20 x 2 = 40
C = 3.14 x 40
C = 125.6 in²
Find the area of a circle that has a diameter of 8.5 cm. (Hint: cut in half to find the radius!)
R = 4.25
A = 3.14 x r²
A = 3.14 x 4.25²
A = 13.345 cm²
A rectangular prism has a length of 2½ in, width of ¾ in, and height of 4 in. What is the volume?
V = lwh
V = 2½ x ¾ x 4
V = ¹⁵⁄₂ in³ or 7½ in³
A cylinder has a diameter of 20 cm and height of 15 cm. What is the volume? (Hint: cut the diameter in half to find the radius!)
V = 3.14 x r² x h
V = 3.14 x 10² x 15
V = 4,710 cm³
A rectangular prism has a length of 1½ in, width of 3½ in, and height of 2 in. What is the volume?
V = lwh
V = 1½ x 3½ x 2
V = ²¹⁄₂ in³ or 10½ in³