The perimeter of a semicircular plate is 108 cm, find its area.

Given: Perimeter of the semicircular plate = 108 cm Let `r` be the radius of the plate. The perimeter of the semicircular plate includes the curved part (half the circumference of a circle) and the diameter. So, ⇒ πr \+ 2r = Perimeter ⇒ πr \+ 2r = 108 ⇒ r(π \+ 2) = 108 ⇒ r = 108 ⇒ r = 108 ⇒ r = 108 ⇒ r = 108 ⇒ r = ⇒ r = 7 x 3 = 21 cm Area of semicircular plate = πr 2 Hence, the area of the semicircular plate is 693 cm 2 .

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A steel wire, when bent in the form of a square, encloses an area of 121 cm². The same wire is bent in the form of a circle. Find area of the circle.

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Two circles touch externally. The sum of their areas is 130π sq. cm and the distance between their centres is 14 cm. Find the radii of the circles.

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Mathematics

The perimeter of a semicircular plate is 108 cm, find its area.

Mensuration

Related Questions

A steel wire, when bent in the form of a square, encloses an area of 121 cm². The same wire is bent in the form of a circle. Find area of the circle.

Two circles touch externally. The sum of their areas is 130π sq. cm and the distance between their centres is 14 cm. Find the radii of the circles.

Mathematics

The perimeter of a semicircular plate is 108 cm, find its area.

Mensuration

Related Questions

A steel wire, when bent in the form of a square, encloses an area of 121 cm2. The same wire is bent in the form of a circle. Find area of the circle.

Two circles touch externally. The sum of their areas is 130π sq. cm and the distance between their centres is 14 cm. Find the radii of the circles.

A steel wire, when bent in the form of a square, encloses an area of 121 cm². The same wire is bent in the form of a circle. Find area of the circle.