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50* Pi

pi = 3.14159 so 157.08 to 2dp

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Q: What is perimeter of a circle with a diameter of 50 cm?
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What is the perimeter of a circle with the radius of 7cm and diameter of 14cm?

The perimeter of a circle is equal to pi times the diameter, so for a circle with a diameter of 14 cm, multiply by pi, which is approximately 3.14, and you get 43.96 cm, which for most purposes you could round off to 44 cm.


A circle has a radius of 8.5cm what is the diameter of the circle?

The radius measures from the center of the circle to the perimeter (outside), so if the radius is 8.5 cm that would make the diameter of the circle 17 cm. (8.5 cm X 2 = 17 cm)


If circle circumference is 50Cm what is diameter?

The formula for the circumference of a circle is C = πd, where C is the circumference, π is pi (approximately 3.14159), and d is the diameter. Given that the circumference is 50 cm, we can plug in the values to the formula: 50 = πd. To find the diameter, we divide both sides by π: d = 50/π ≈ 15.92 cm. Therefore, the diameter of the circle is approximately 15.92 cm.


What is the perimeter of a semicircle if the diameter is 8cm?

To find the perimeter of a semicircle, you need to add the curved edge (half the circumference of a full circle) to the diameter of the semicircle. The formula for the circumference of a full circle is C = πd, where d is the diameter. Therefore, the circumference of the full circle is π(8) = 8π cm. The perimeter of the semicircle would be half of the circumference of the full circle plus the diameter, so it would be 4π + 8 cm, or approximately 20.28 cm.


What is the perimeter of a semicircle with radius 8cm?

A semicircle is half a circle. So the perimeter of a semicircle is half the circumference of the whole circle plus the diameter, which is twice the radius: perimeter = 1/2 x 2{pi}r + 2r perimeter ~= 3.14x8 + 2x8 ~= 41.13cm