Perimeter of Semicircle and Quadrant

What is the formula to calculate the perimeter of a semicircle?

• (π * r) + (2 * r)

• 2 * r

• 2 * (π * r)

• (π * r) + (2 * r^2)

If the radius of a semicircle is 5 units, what is its perimeter?

• 25.7

• 20.7

• 10.7

• 15.7

What is the formula to calculate the perimeter of a quadrant?

• P = π * r

• P = (1/4) * 2 * π * r

• P = (1/2) * π * r

• P = 2 * π * r

If the radius of a quadrant is 8 units, what is its perimeter?

• 64π

• 16π

• 9π

• 4π

What is the perimeter of a semicircle with a radius of 3 units?

• 12.56637

• 18.84956

• 9.42478

• 24.84956

What is the perimeter of a quadrant with a radius of 6 units?

• 6 * pi

• 18 * pi

• 36 * pi

• 12 * pi

If the perimeter of a semicircle is 12π units, what is its radius?

• 4

• 8

• 6

• 2

If the perimeter of a quadrant is 18 units, what is its radius?

• 3.14

• 5.73

• 9

• 2.5

What is the perimeter of a semicircle with a diameter of 10 units?

• 25.7

• 30.7

• 20.7

• 15.7

What is the perimeter of a quadrant with a diameter of 12 units?

• 12

• 24

• 6π

• 36