Question

The
circumference of e circle exceed its diameter
by 60cm. Find the diameter
of the circle​

Answer 1

Answer:

Let radius of circle be r.

Diameter = 2 * radius = 2r.

Circumference = 2 * π * r

It is said, circumference of circle exceeds the diameter of 60 cm.

Then,

Circumference = Diameter + 60

=> 2 * π * r = 2r + 60

=> 2r(π - 1) = 60

⇒ 2r(22/7 - 1) = 60

⇒ 2r(15/7) = 60

⇒ 30r/7 = 60

⇒ r = 14 cm

#BeBrainly✌✌

Step-by-step explanation:

Answer 2

Answer:

Given,

2πr=60+2r

⇒2×

7

22

×r=60+2r

⇒

7

22

×r=30+r

⇒30=

7

22

r−r

⇒30=

7

15r

⇒r=14

Circumference=2πr=2×π×14=28π.