A cube of side 3 cm is painted on all its faces. Find the cost of painting if cost per metre square is rupees 1200.
plz answer quickly its really urgent
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Cost of painting on all a cube faces is ₹648
Step-by-step explanation:
GIVEN
Side = 3 cm
Cost = ₹1200 per metre
___________________________
TO FIND
Cost of painting on all its faces
___________________________
We know that,
Total Surface Area Of Cube = 6 × Side²
Total Surface Area Of Cube = 6 × 3²
Total Surface Area Of Cube = 6 × 9
Total Surface Area Of Cube = 54
Total Surface Area Of Cube = 54 cm
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We know that,
1 cm = 0.01 m
100 cm = 1 m
54 cm = 54 / 100
54 cm = 0.54 m
54 cm = 0.54 m
___________________________
We know that,
Cost of painting on cube is ₹1200 per metre
So,
Cost of painting on cube of 0.54 m
1 m = 1200
0.54 = 1200 × 0.54
0.54 = 648
0.54 = ₹648
Cost of painting on all a cube faces is ₹648
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