Question

It needs 50 ml paint for painting a picture 50 cm x 25 cm. How much paint is needed to paint a similar picture
100 cm x 50 cm

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Answer 1

Answer:

as 50ml paint is needed to paint 50*25cm

therefore, for 100*50 i.e, 2(50*25) the paint is required 2*50=100ml

Answer 2

Answer:

Total surface area of cuboid

2 (lb+bh+lh)

= 2(60×40+40×30+30+60)

= 2(2=00+1200+1800)

=2(5400)

=10800cm square

so,

cost to paint 20cmsquare =50p

cost to paint1cmsquare=50/20p

cost to paint 10800cm square =50×10800 /20=27000=270rs