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What is the perimeter of a semicircle if it's radius is 280 cm?

Anonymous

∙ 14y ago

Updated: 4/28/2022

Perimeter = (pi*280)+560 = 1439.645943 cm

Wiki User

∙ 14y ago

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Q: What is the perimeter of a semicircle if it's radius is 280 cm?

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Continue Learning about Other Math

What is the perimeter of a 12 cm semicircle?

it is 6 and 2 or 3 and 3

What is the semi circle radius 10cm?

It is half of a circle; the circle's radius (and that of the semicircle) is 10 cm.

What is the radius of a circle of perimeter 20 cm?

Pi= 3.1416 circle / 3.1416=diameter

A semi circular sheet of diameter 28 centimetre us bent into an open conical cup find depth and capacity of a cup?

Depth of cone = Radius of semicircle = 28/2 cm = 14 cm Circumference of the base of cone = Arc of semicircle = 0.5*pi*28 = 14*pi cm Therefore radius of base = 14*pi/(2*pi) = 7 cm Capacity = 1/3*pi*r2*h where r is the radius of the base of the cone. = 1/3*pi*72*14 = 718 cm3

Perimeter of a square with 7-cm sides?

The perimeter is 7 cm

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Related Questions

What is the perimeter of a 8cm semicircle?

8*pi + 16 = 41.13 cm (approx)It depends on whether 8 cm is the radius or diameter of the semicircle.

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

How do you find the perimeter of a semicircle if its diameter is 45 cm?

Perimeter of the semicircle including its base: 180/360*pi*45+45 = 115.686 cm rounded to 3 decimal places

What is the area of a semicircle whose radius is 5 cm?

50.25cm

What is the perimeter of a 12 cm semicircle?

it is 6 and 2 or 3 and 3

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.

How do you find the radius of a semi circle with an equal perimeter to a rectangle with 1 side 3cm and the other side equal to the radius?

Suppose the radius is R cm. Then the perimeter of the rectangle is 2*(3+R) = 6 + 2R cm. The length of the arc of the semicircle is pi*R and the length of the diameter is 2*R so the perimeter of the semicircle is pi*R + 2R The two perimeters are equal so 6 + 2r = pi*R + 2R That is, 6 = pi*R and so R = 6/pi

What is the semi circle radius 10cm?

It is half of a circle; the circle's radius (and that of the semicircle) is 10 cm.

What is the radius of a circle of perimeter 40 cm?

Radius = 40/2pi cm

What is the approximate area of a semicircle whose radius is 2Cm?

2pi sq cm

How much bigger is the area of a quadrant of radius 8 cm than a semicircle of a diameter 4 cm?

Twice as big.

What is the quarter circle's radius if the perimeter of a quarter circle is 32.13 centimeters?

The perimeter of a quarter circle is 2 radii plus a quarter of the circumference of the whole circle: → 2 × radius + ¼ × 2 × π × radius = 32.13 cm → radius × (2 + π/2) = 32.13 cm → radius = 32.13 ÷ (2 + π/2) cm ≈ 9.00 cm

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