Question

a) Find the diameter of a circle whose radius is 3.5cm.
b) Find the radius of a circle whose diameter is 15.6 cm.

Answer 1

Answer:

a) we know diameter = radius x 2.

then, 3.5 x 2 = 7 is the diameter.

b) we know radius = diameter ÷ 2.

then, 15.6 /2 = 7.8 is the radius.

Step-by-step explanation:

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Answer 2

Answer:

Diameter of circle is 7 cm .

Radius of circle is 7.8 cm .

Step-by-step explanation:

a.

Given information,

Radius of circle is 3.5 cm.

We have to find out the value of The diameter of a circle.

Diameter is a straight line from one side to the other side that passes through the center point of a circle.

Radius is half of diameter .

As we know that ,

Radius is half of diameter.

Radius = $\frac{diameter}{2}$

Diameter = Radius × 2

As per the given data ,

Diameter = 3.5 × 2

By dividing by 2 we get

Radius = 7

Hence,

Diameter of circle is 7 cm .

b .

Given information,

Diameter of circle is is 15.6 cm

We have to find out the value of The radius of a circle.

Diameter is a straight line from one side to the other side that passes through the center point of a circle.

As we know that ,

Radius is half of diameter.

Radius = Diameter ÷ 2

As per the given data ,

Radius = 15.6 ÷ 2

By dividing by 2 we get

Radius = 7.8

Hence,

Radius of circle is 7.8 cm .