Question

The radius of a circle is 14 cm. Find the radius of a circle whose area is double the area of this circle .
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Answer 1

Step-by-step explanation:

Let C

1

be the circle with radius R

1

=14cm

So area of C

1

=πR

1

2

=π14

2

Let C

2

be the circle with radius R

2

whose area is double of the area of C

1

.

So, area of C

2

=2× area of C

1

πR

2

2

=2×π14

2

R

2

2

=2×14

2

R

2

=14

2

cm

Note: Radius can not be negitive.

Answer 2

Step-by-step explanation:

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