Question

Each Question
*) A Closed box is in the shape of cuboid, whose length is 60cm,
40 cm. and height 30cm.
(i) Find the total surface area of the box.
(ii) Find the cost for painting the outer surface of the box at the rate
of 50 paise per 20 cm​

Answer 1

Answer:

1 . total surface area = 2 (lb + bh + hl )

=2 (60*40+40*30+30*60)

=2 (2400+1200+1800)

=2* 5400

=10800 cm

2. 50 paise = 20 cm

1 cm = 50/20=5/2

10800cm =10800 *5/2 =5400*5 =27000paise.

Answer 2

Total S.A= 2(lb+bh+lh)
=2(2400+1200+1800)
=2(5400)
=10800
50*2=1 rupee
Thus 1 rupee=20*2=40cm
Cost=10800/40=270 rupees
Please mark me as the brainliest as I am new to this app