Question

The area of a room with lenght 5m and breadth 4cm is
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Answer 1

Answer:

Area of 4 walls = 2 ( l + b ) × h

= 2× ( 11 ) × 4 = 88 m^2

cost = 88 × 5 = 440 Rs.

Answer 2

Answer:

$area \: of \: a \: rectangular \: room \: is \: l \times b \\ where \: \: l = 5m = 500cm \: \: and \: b \: = 4cm \: \\ hence \: area \: = 500 \times 4c {m}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2000cm {}^{2}$