Question
The volume of a cube is 512 cm³. If the cost of
painting the cube is Rs. 6 per cm², then find the cost of painting five faces of the cube.Solution
Let the length of the edge of the cube be ‘x’ cm.
Volume of cube = x³
ATQ;
512 = x³
Or, x = 8
Area of five faces of the cube = 5x² = 5 × 8 × 8 = 320 cm²
Required cost = 320 × 6 = Rs. 1,920
More Mensuration Questions
225÷ 25 x 21 - 30 = ? + √2209 - √7744
40% are the passing marks. A student gets 250 marks yet fails by 38 marks. What is the maximum marks?
26% of 650 + 15% of 660 – 26% of 450 = ?
What will come in the place of question mark (?) in the given expression?
(40% of ? × 43 ) – 232 = 751Â
3% of 3000 x ?% of 2000 = 3600
What will come in the place of question mark (?) in the given expression?Â
48 ÷ 4 × (3 + 5) – 6² + 10 = ?
- What will come in place of (?) in the given expression.
√324 + √121 – √49 = ? √? + √1296 + √729 = 464/4 Â
350% of (450 / 1.5) = ?% of 4200Â Â
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