Question

The external length breadth and height of a wooden box open at the top are 10cm, 8 cm and 5 cm respectively. If the total thickness is 1 cm, find the the total surface area

Answer 1

T.S.A=OUTER S.A + INNER SURFACE AREA+UPPER WOODEN OPEN SURFACE AREA

T.S.A= 492

Answer 2

so as we see ,the answer is 452