Question

A carpenter is making a tabletop with circumference 4.5m. What is the radius of the tabletop in cm?

Answer 1

Answer:

The radius of the tabletop in cm is 72 cm (approximately).

Step-by-step explanation:

Given:

Circumference of tabletop is 4.5m.

So, to get the radius in cm.

Now, we convert the unit of circumference from m to cm.

( 1m = 100 cm )

$4.5m = 4.5\times 100cm$

               $= 450 cm$.

Let the value of radius be r.

Now, putting the formula of circumference to get the radius:

Circumference=$2\pi r$

$450 =$$2\times 3.14\times r$ (putting the value of π = 3.14)

$450=$$6.28\times r$

Dividing by 6.28 on both the sides:

$71.65=r$

Radius = 71.65cm

Therefore, the radius of the tabletop in cm is 72 cm (approximately).