Question

find the area of four walls of a room if its length 12cm breath 10cm height 7.5cm​

Answer 1

area of four walls = 2(l+b)×h

=2(12+10)×7.5

=2×22×7.5

=44×75/10

=330cm²

Answer 2

Answer:

Length = 12cm

Breadth = 10cm

Height = 7.5cm

Area of 4-walls = perimeter × height

= 2( length × breadth) × height

= 2( 12 + 10 ) × 7.5

= 2 × 22 × 7.5

= 330 sq. cm Ans...

Hence, The area of 4-walls is 330 sq. m .

Hope it helps you...