Question

If the circumference of a circular sheet is 154 m, find its radius. Also find the area of the sheet. (Take π =227)

Answer 1

Answer:

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Explanation:

Given that circumference of circle = 154 m

i.e 2 π r = 154 ⇒ r = 154 / 2 π

⇒ r = 154 x 7 / 2 x 22.

⇒ r = 49 / 2  = 24.5 m

∴ radiu of circle = 24.5 m

Area of circle A = π r2

A = π x 49 / 2 x 49 / 2  = 3773 / 2 = 1886.5 m2 .

Answer 2

circumference of circular sheet =154m

(circumference is equal to diameter)

there for, radius =d/2

154/2=77

Now, area of sheet is equal to

π r^2

=277*155*154