Question

calculate the total surface area of the outside of an open box (without a lid) which has a base measuring 1.0 m by 0.8 m and has a height of 0.5 m​

Answer 1

S.A= C. S. A of box + lb

l=1.0

b=0.8

h=0.5

so,

S.A= 2h(l+b) + lb

2*0.5(1.0+0.8) + 1.0*0.8

(1) (1.8) + 0.8

1.8 + 1.8

3.6m^2

I hope so it helps u☺☺