Question

find the diameter of the circle whose circumference are given below
(a) 35.8m
(b) 101.7cm
(c) 125.6mm
(d) 37.7m​

Answer 1

The diameters for the circles whose circumferences are 35.8 m, 101.7 cm , 125.6 mm and 37.7 m are 11.4 m , 32.37 cm , 39.98 mm and 12 m respectively.

• The circumference of a circle is given by the formula 2πr which in terms of diameter is expressed as πd.

• Now we equate the given circumferences with the formula and find the diameter for various circumferences given.

(a) Circumference = 35.8 m

35.8 = πd

d ≈ 11.40 m

• Similarly for other circumferences too we find out the diameters ,

(b) Circumference = 101.7 cm

101.7 = πd

d = 32.37 cm

(c) Circumference = 125.6 mm

125.6 = πd

d = 39.98 mm

(d) Circumference = 37.7 m

37.7 = πd

d = 12 m