Question

a circular disc of radius 14 cm is divided into two equal parts find the circumference of each part

Answer 1

$circumference = 2\pi \times r \\ c = 2 \times 22 \div 7 \times 14 \\ c = 44 \times 2 \\ c = 88$
c÷2=88÷2
=44
circumference of both part is c/2 + diameter =44+28=72