Question

Find the diameter of the circles whose circumferences are given below.
(a) 35.8 m
(b) 101.7 cm
(c) 125.6 mm
(d) 37.7 m.​

Answer 1

Answer:

Answer. 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

Answer 2

Step-by-step explanation:

(a) circumference = π x r²

= 22/7 x d/2 x d/2

35.8 = 22xd²/28

d² = 35.8 x 28/22 = 45.56

d = √45.56 = 6.75

(b) circumference = π x d/2 x d/2

101.7 = 22/7 x d²/4

d² = 101.7 x 28/22 = 129.44

d = √129.44 = 11.38