Question

A circular metal disc of radius 1.4 cm

Answer 1

$circumference \: \: of a \: \: circle =2Пr$

$value \: \: of  \: \: \: \pi \: \: \: is \: \: \: 22/7$

$2×22÷7×14cm =88cm$

Answer 2

circumferenceof a circle=2Пr

2×22÷7×14cm=88cm2×22÷7×14cm =88cm2×22÷7×14cm=88cm