Question

A sheet of paper measure 40cm¡Á20cm.A strip 4cm wide is cut from it all around find the area of strip cut out and area of remeining sheet of paper

Answer 1

area of original = 40(20) =800 cm^2

after cutoff, new size is 32 by 12
area of that = 32(12) = 384 cm^2

area of strip cut out = 800-384 = 416 cm^2