Question

a triangular wire whose perimeter is 28.26 cm is bent into a circle.find the diameter of the circle.(take ^=3.14)

Answer 1

Perimeter of a triangle=circumference of a circle.

28.26=2×3.14×r
28.26=6.28r
28.26/6.28=r
4.5=r

diameter=2r
d=2×4.5
d=9cm

Answer 2

perimeter of a triangle= circumference of circle

28.26=6.28radius
28.26÷6.28=4.5radius
diameter=2r
dia meter=2×4.5
dia meter=9cm

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