Question

the cost of painting the four walls of a room 10 metre long 5m wide and 6m high at the cost of₹4per square metre is​

Answer 1

Answer:

Rs 720

Step-by-step explanation:

dimensions of room = 1om long, 5m wide and 6m high

rate of painting 4 walls of room= Rs4 per sq meter

cost of painting 4 walls = 4 × 2(l+b)×h

= 4× 2(10+5)×6

= 4 × 180 = Rs 720

Answer 2

$dimension \: of \: room \: = 10m \: long \: 5m \: wide \: and \: 6m \: high \\ rate \: of \: painting \: wall \: of \: room \: = rs4 \: sq \: meter \: \\ cost \: of \: painting \: 4wall \: = 4 \times 2(l + b) \times h \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4 \times 2(10 + 5) \times 6 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 8(15)6 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 720$

I hope this help you

please mark me brainliest