Six cube of side 6 cm are joined together to form a cuboid first two are to be painted red next three are to be painted yellow and the last one is to be painted green find the red surface are ,yellow surface area and green surface area also find the cost of painting at the rate of Rs.3 centimetre square
Answers
Red = 324 cm² yellow = 432 cm² green = 180 cm² cost of painting = 2808 Rs
Step-by-step explanation:
A cube has 6 faces
when joined together in a row
first & last will have 5 faces to paint
& all others will have 4 faces to paint
Area of one face = 6*6 = 36 cm²
Total Area of cuboid = 2(36 * 6 + 36*6 + 6 * 6) = 936 m²
cost of painting at the rate of Rs.3 cm²
= 936 * 3
cost of painting = 2808 Rs
first two are to be painted red
= 1*5 * 36 + 1*4 * 36
Red = 324 cm²
next three are to be painted yellow
= 3 * 4 * 36
yellow = 432 cm²
last one is to be painted green
= 1 * 5 * 36
green = 180 cm²
324 + 432 + 180 = 936 cm²
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