Question

the radius of a circular field is 21 m.find its perimeter and area. Explain in detail.

Answer 1

Answer:

Perimeter of Circular field = 2πr

= 2×22/7 × 21

= 132 m

Area = πr² = 22/7 ×(21)² = 1386 m²

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Answer 2

radius(r) of a circular field is=21m

as we know that the formulae for finding area of circle is = πr²

        we take value of π as 22/7                

so the area is= 22/7×21m×21m=1386m²

Now, the formulae for perimeter of the circle is =2πr

   

so the perimeter is=2×22/7×21m=132m