Question

Find the circumferenceof a circle. Radius is 1.2

Answer 1

Circumference of circle = 2π × radius


Given, Radius = 1.2 units



Applying formula,


$Circumference \: of \: the \: circle = 2 \times \frac{22}{7} \times 1.2 \\ \\ \\ \\ Circumference \: of \: the \: circle = 24 \times \frac{22}{70} \\ \\ \\ \\ Circumference \: of \: the \: circle = 7.54 \: units$

Answer 2

we know, to find the approximate circumference of a circle we have to multiply the diameter with 3
so, radius = 1.2
diameter = 2 × radius
= 1.2 × 1.2
= 2.4
NOW, diameter = 2.4
therefore, circumference = 3×2.4
= 7.2
therefore circumference = 7.2