Question

Circumference of a circle exceeds it's diameter by 270 cm it's diameter is​

Answer 1

Answer:

126

Step-by-step explanation:

Circumference of circle= 2Πr = πd

πd = 270 +d

d(Π-1) = 270

d ( 15/7) =270

d = 270 * 7/15

d = 18 * 7

d = 126

I hope this is helpful..

Answer 2

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It is given that circumference exeeds the diameter by 270 cm.

Let the radius be r

So diameter =2r

Circumference=2πr

A.T.Q.

(C-D)=270cm

2πr-2r=270

(2r is common)

2r(π-1)=270

$\sf2r( \frac{22}{7} - 1) = 270$

$\sf \: r = ( \frac{22}{7} - \frac{7}{7} ) = \frac{270}{2}$

$\sf \: r = \frac{15}{7} = 135$

$\sf \: r = \frac{135 \times 7}{15}$

r=63

So radius=63 cm

Diameter=2r=2×63=126cm

Hope it helps you.....