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

Question

KnowledgeBoat · Accepted Answer

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 = πr² Hence, the area of the semicircular plate is 693 cm².

Mathematics

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

Mensuration

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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.

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