Question

a cuboid has total surface area 352 cm square. If the length and breadth of the cuboid are 12 cm and 8 cm, find its height

Answer 1

Answer:

Total surface area of a cuboid is given by 2(lb+bh+lh) where l is length, b is breadth and h is height of the cuboid.

Given:-

l=12 cm

b=9 cm

A=468 cm

2

Let the height of the cuboid be h.

Then, by using above given formula,

468

234

21h

21h

h

=2(12×9+9h+12h)

=108+21h

=234−108

=126

=6 cm

Answer 2

Answer:

TSA of a cuboid =352 cm^2

length(l)=12cm

breadth(b)=8cm

height(h)=?

Here,

TSA=2(lb+bh+hl)

or, 352=2(12*8+8*h+h*12)

or, 352/2=36+8h+12h

or, 176=36+20h

or, 176-36=20h

or, 140=20h

or, 140/20=h

•°•h=7cm

Hence, the height of a cuboid is 7cm

Step-by-step explanation:

Hope it helps