Question

from a rectangular piece of metal sheet of length and breadth 1.60m and 80cm respectively,3 circular sheets of 20cm radius are cut out. What area of metal is left ? Use π=3.14

Answer 1

area of sheet = 1.6* 0.8= 1.25

area of circle = 3.14*0.2^2 =0.1256

area of three circles= 0.1256*3 = 0.3768

area of sheet left = 1.25-0.3768= 0.8732