Question

Calculate the area and perimeter of the remaing protion, after cutting four quadrants each of radius 7cm, from the four corners of a rectangle measuring 20cm and 30cm

Answer 1

area of rectangle 2000
perimeter of remaing portion 1,384.56

Answer 2

Area =20×30-1/4×4×22/7×7×7
=600-154=546cm
perm.=2(30+20)-2×22/7×7
=100-44=56cm