Surface Area of Cylinders Practice

Front

What is the formula for the surface area of a cylinder?

Back

The surface area (SA) of a cylinder is given by the formula: SA = 2πr(h + r), where r is the radius and h is the height.

Front

How do you find the radius of a cylinder if you are given the diameter?

Back

The radius (r) is half of the diameter (d). So, r = d/2.

Tags

CCSS.7.G.B.4

Front

Calculate the surface area of a cylinder with a radius of 4 inches and a height of 10 inches.

Back

SA = 2π(4)(10 + 4) = 351.68 in².

Front

What is the surface area of a cylinder with a diameter of 18 inches and a height of 15 inches?

Back

SA = 2π(9)(15 + 9) = 1,356.48 in².

Front

If a cylinder has a radius of 3 inches and a height of 8 inches, what is its surface area?

Back

SA = 2π(3)(8 + 3) = 207.24 in².

Front

What is the surface area of a cylinder with a height of 15 yards and a radius of 5 yards?

Back

SA = 2π(5)(15 + 5) = 628.32 yd².

Front

How do you round the surface area to the nearest hundredth?

Back

Look at the third decimal place: if it's 5 or more, round up the second decimal place by one.

Tags

CCSS.7.EE.B.3

Front

What is the surface area of a cylinder with a radius of 7 inches and a height of 10 inches?

Back

SA = 2π(7)(10 + 7) = 754.77 in².

Front

If a cylinder has a surface area of 1,278.8 in², what could be its dimensions?

Back

Possible dimensions could be a radius of 6 inches and a height of 10 inches.

Front

What is the surface area of a cylinder with a radius of 2 meters and a height of 5 meters?

Back

SA = 2π(2)(5 + 2) = 87.96 m².