Question

a room With a flat roof a rectangular in safe of breath 3
metre length 4.5 metre and and height 3.5 metre it is to be painted inside on the walls and won the ceiling but not on the floor find the cost of painting at the of 8% square metre​

Answer 1

Answer:

area of rectangle =l*b*h=3*4.5*3.5=47.25

Step-by-step explanation:

cost of square metre is 3.8016

Answer 2

Answer:

Area of box excluding flour will be 66 m²

Cost of painting of the box excluding flour will be

= 66 × 8

= 528 RS

Step-by-step explanyation:

Length= 4.5

Breath= 3

Height= 3.5

Area of cuboid = 2(lb + bh + ho )

Area of cu oid excluding base

= 2(bh + hl) + lb

=2(3×3.5+3.5×4.5) + 4.5×3

= 2(10.5+15.75) + 13.50

= 2(26.25) + 13.50

= 52.50 + 13.50

=66.00 m²

Cost of painting = rate × surface area

= 66.00×8

= 528 RS

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