Question

Fill in the blanks:
6. If the radii of two concentric circies are 15 cm. and 13 cm. Then area of the circular ring
is.........​

Answer 1

Answer:

Area of the circular ring ≈ 175.93 cm²

Step-by-step explanation:

Area of circle with radius 15 cm = πr²

= 3.14×(15)²

≈ 706.86 cm²

Area of circle with radius 13 cm = πr²

= 3.14×(13)²

≈ 530.93 cm²

Area of the circular ring = 706.86 - 530.93

≈ 175.93 cm²

Answer 2

Answer:

So

Step-by-step explanation:

Radius of inner circle r is 13 and outer circle R is 15 cm.

Now to find area of Circular ring hence it will be

Area of (outer circle minus inner circle)

pi (R^2-r^2)

ANSWER TO THE QUESTION

3.14 (225-169)

=175.84 cm^2

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