Question

The perimeter of the floor of a room is 30cm and height is 3cm. Find the area of 4 walls of the room

Answer 1

Hey mate.!!


Here's your answer..

____________________________________

$area \: of \: four \: walls = 2(l + b)h \\ = 30 \times 3 \\ = 90 \: sq \: cm$
____________________________________

HOPE IT HELPS.

@Rêyaañ11

Answer 2

hey friend
I am meritkshitij here.

given,

perimeter of floor of the room = 30 cm

=> 2 ( l + b ) = 30 cm

and, height of room. = 3 cm


we know,

area of four walls of room. = C.S.A of room. = 2 ( l + b ) × h

= 30 × 3 cm²

= 90 cm²



Thanks