Question

A wooden box with internal dimensions 54cm x 30 cm x 16 cm is open at the top. Find the total cost of painting the wooden box internally at the rate of ₹50 per cm^2​

Answer 1

$\sf\huge\blue{\underline{solution:-}}$

$\sf \red{capacity \: of \: box = l \times b \times h}$

$\: \: \: \: \: \: \: = 54 \times 30 \times 16 \\ = \sf{25920cm {}^{3}}$

$\sf \green{volume \: of \: wood = csa \: of \: cuboid \: + l \times b} \\ = \sf2h(l + b) + l \times b \\ \sf = 2(16)(54 + 30) + 54 \times 30 \\ \sf = 1014 + 162 \\ \sf = 2634cm {}^{3}$

$\sf \blue{thickness \: of \: wood = 2cm} \\ \sf = 2634 \times 2 \\ \sf = 5268cm {}^{3}$

$\blue\rm\underline\bold{hence\:solved \red{\huge{\checkmark}}}$

Answer 2

Answer:

hope it helps you.,......