Question

Find the radius of a circle whose diametre is 19 cm. (B) 9.50 cm (C) 8.5 cm (D) 9.7 cm (A) 8.2 cm (E) None of these​

Answer 1

Answer: 7.50

7.50

Diametre = 2 x radius, so

Radius = Diametre/2

Radius = 19/2

            = 9.5 or 9.50  (both are same)

so option B is the correct answer which is 9.50cm

Hope this helped you in any way possible  ^-^

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Answer 2

Step-by-step explanation:

Fact: circumference of a circle whose radius is r is given by 2πr

Here r=7 cm

Hence circumference of the circle =2π(7)=2⋅

7

22

⋅7=2⋅22=44 cm