Question

find the surface area of the cuboids /L=11cm /b=4cm/h=21cm ? formula-2 (lb +bh+lh)

Answer 1

Length=11cm,Breadth=4cm,Height=21cm. Surface area=2(lb+bh+hl).

= 2(11×4+4×21+21×11)sq units.

=2(44+84+231)sq units.

=2×369 sq units.

=738 sq units