Question

1. Find the surface area of the cuboids whose
dimensions are :
(a) 3 m, 4 m, 5 m
with explanation please help​

Answer 1

Answer:

94m

Step-by-step explanation:

let l be 3m

w be width

h be hight.

then,

Surface area of cuboid is 2*3*4+2*3*5+2*5*4=24+30+40=94m

Answer 2

Step-by-step explanation:

total surface area of cuboid=2(lb+bh+hl)

=2(12+20+15)

=2*47

=94m

and

lateral surface area of cuboid = 2h(l+b)

=2*5(3+4)

=10*7

=70m