Question

Radius of outer ring is 14cm and radius of inner circle is 7cm find the area of ring.​

Answer 1

Answer:

We need to find the area of which ring?

Step-by-step explanation:

Area of outer ring = πR²

= 22/7×196

= 22×28

= 616 cm²

Area of inner ring = πr²

= 22/7×49

= 154 cm²

HOPE YOU UNDERSTOOD..

@NJD

Answer 2

The area of ring is 462 sq. cm.

Explanation:

Area of circle = $\pi r^2$ , where r= radius of the circle.

As per given , Radius of outre ring = R= 14 cm

Radius of inner ring = r = 7 cm

Then, Area of ring = Area of outer circle - Area of inner circle

= $\pi R^2-\pi r^2$

$=\pi(R^2-r^2)\\\\ =\dfrac{22}{7}(14^2-7^2)\\\\=\dfrac{22}{7}(196-49)\\\\=\dfrac{22}{7}(147)=462\ cm^2$

Hence, the area of ring is 462 sq. cm.

# Learn more:

The ratio of area of a circle to the area of semi-circle is-

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