MathematicsIf the perimeter of a room is 28 m and its height is 2.5 m, then the cost of white washing its walls at the rate of 5 per square meter is

If the perimeter of a room is 28 m and its height is 2.5 m, then the cost of white washing its walls at the rate of 5 per square meter is

Perimeter of room

$p = 28 m$

Height

$h = 2.5 m$

L.S.A.

$h = ?$

$L . S . A = p × h = 28 × 2.5 = 70 s q . c m$

Cost of white washing

$= 70 × 5 = R s .350$

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