Question

A school room is 12 m long,8 m wide and 5m high. find the area of its four walls​

Answer 1

Answer:

Area of the four walls of a room=200 sq.m

Step-by-step explanation:

Given:-

A school room is 12 m long,8 m wide and 5m high.

To find:-

find the area of its four walls.

Solution:-

Length of the room(l)=12m

Breadth of the room(b)=8m

Height of the room(h)=5m

Area of the four walls of a room=2h(l+b) sq.units

=>2(5)(12+8) sq.m

=>10(20) sq.m

=>200 sq.m

Answer:-

Area of the four walls of a room=200 sq.m

Answer 2

${ \large{\bf { \underline{ \underline{ \red{Given : }}}}}}$

Length of the room = 12m

Breadth = 8m

Height = 5m

$\large \bold{ \underline{\underline \purple{Required \: answer : }}}$

Area of four walls.

$\large \bold{ \underline{\underline \green{Formula \: used : }}}$

Area of four walls = 2(l + b)h

$\large \bold{ \underline{\underline \orange{Solution : }}}$

l = 12m, b = 8m and h = 5m

therefore,

area of four walls = 2(12 + 8)×5 = 2 × 20 × 5

$\small{200 {m}^{2} }$

Hence, the area of four walls = 200m^2