What will be the area of 4 metres high wall on all four sides of a rectangular hall having perimeter 64 m ?

A. 256 m²

B. 328 m²

C. 384 m²

D. Cannot be determined

E. None of these

Answer: Option A

Solution(By Examveda Team)

Perimeter = 64 m
⇒ 2(l + b) = 64
∴ Area of 4 walls
= 2(l + b) × h
= (64 × 4) m²
= 256 m²