Question

The dimensions of a cuboid room are 8.6m x 5.4m x 4m. The room has two doors
each measuring 2m by 1m and four windows each measuring 1m by 1m. What will be
the cost of plastering the four walls and the ceiling at $65
cm?​

Answer 1

Answer:

area for plastering =area of four walls+ area of ceiling -( area of door+area of window)

=2(5.4×4+8.6×4)+(8.6×5.4)-(2(2×1)+4(1×1))

=112+46.44-8

=104+46.44

=150.44 m²

=150.44×100×100

=1504400cm²

cost of plastering four walls and ceiling = $65/cm²

cost of plastering four walls and ceiling=65×1504400$

97786000$

Answer 2

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Answer

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