four cubes of Edge 5 cm each are placed side by side and stuck togethe

1.	four cubes of Edge 5 cm each are placed side by side and stuck together. if the outer surface alone is painted at rupees 300 per metre square, find the cost of painting .
Answer» ANSWER: If two cubes are joined, then the resultant SHAPE will be a cuboid and the length of that cuboid will be TWICE the EDGE of each cube,breadth and height are the edge of cube. Therefore,the length of the cuboid(l)=25=10cm Breadth of the cuboid(b)=5cm Height of the cuboid(h)=5cm Total SURFACE area of the cuboid=2[lb+bh+lh] =2[(105)+(55)+(105)] =2(50+25+50) =2(125) =250 sq.cm. Cost of painting=250(300)=Rs.75,000.

four cubes of Edge 5 cm each are placed side by side and stuck together. if the outer surface alone is painted at rupees 300 per metre square, find the cost of painting .

Answer»

If two cubes are joined, then the resultant SHAPE will be a cuboid and the length of that cuboid will be TWICE the EDGE of each cube,breadth and height are the edge of cube.

Therefore,the length of the cuboid(l)=2*5=10cm

Breadth of the cuboid(b)=5cm

Height of the cuboid(h)=5cm

Total SURFACE area of the cuboid=2[lb+bh+lh]

=2[(10*5)+(5*5)+(10*5)]

=2(50+25+50)

=2(125)

=250 sq.cm.

Cost of painting=250(300)=Rs.75,000.

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four cubes of Edge 5 cm each are placed side by side and stuck together. if the outer surface alone is painted at rupees 300 per metre square, find the cost of painting . ​

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four cubes of Edge 5 cm each are placed side by side and stuck together. if the outer surface alone is painted at rupees 300 per metre square, find the cost of painting .