Volume of Cylinders, Cones, and Spheres

What is the formula for the area of a circle?

• πr²

• 2πr

• πd

• r²

What is the formula for the circumference of a circle?

• The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius of the circle.

• The formula for the circumference of a circle is C = πr², where C is the circumference and r is the radius of the circle.

• The formula for the circumference of a circle is C = 2r, where C is the circumference and r is the radius of the circle.

• The formula for the circumference of a circle is C = πd, where C is the circumference and d is the diameter of the circle.

If the radius of a circle is 5 cm, what is the area of the circle? A = π × r × r.

• A) 78.5 cm²

• B) 25 cm²

• C) 50 cm²

If the radius of a circle is 5 cm, what is the circumference of the circle? C = 2 × π × r.

• A) 31.4 cm

• B) 10 cm

• C) 15.7 cm

Calculate the area of a circle with a radius of 4 cm using the formula A = π × r².

• 50.24 cm²

• 48 cm²

• 52 cm²

• 45 cm²

Calculate the circumference of a circle with a radius of 4 cm using the formula C = π × 2 × r.

• 25.12 cm

• 20.00 cm

• 30.00 cm

• 15.00 cm

Calculate the area of a circle with a radius of 7 m using the formula A = π × r².

• 153.86 m²

• 100 m²

• 200 m²

• 50 m²

Calculate the circumference of a circle with a radius of 7 m using the formula C = π × 2 × r.

• 43.96 m

• 21.98 m

• 50.24 m

• 38.48 m

Calculate the volume of the cylinder with radius r = 2 and height h = 6 using the formula V = πr²h. Use π = 3.14.

• V = 3.14 * 2² * 6 = 75.36 cubic units.

• V = 3.14 * 2² * 6 = 72.36 cubic units.

• V = 3.14 * 2² * 6 = 78.36 cubic units.

• V = 3.14 * 2² * 6 = 70.36 cubic units.

Calculate the volume of the cylinder with radius r = 1 and height h = 8 using the formula V = πr²h. Use π = 3.14.

• V = 3.14 * 1² * 8 = 25.12 cubic units.

• V = 3.14 * 1² * 8 = 28.12 cubic units.

• V = 3.14 * 1² * 8 = 24.12 cubic units.

• V = 3.14 * 1² * 8 = 26.12 cubic units.