Question
A conical cap has base diameter 126 cm and height 16 cm.
What is the cost of painting the surface of the cap at the rate of 20 paisa per cm² ? (Take π = 22/7.)Solution
Given: Diameter = 126 cm ⇒ Radius = 63 cm, Height = 16 cm, π = 22/7, painting rate = 20 paisa/cm². Slant height, l = √(632 + 162) = 65 cm Curved Surface Area (CSA) = πrl = (22/7) × 63 × 65 = 12884.29 sq.cm Cost = 12884.29 × 0.20 = 2576.86 paisa = ₹ 25.77
More Previous year papers Questions
Solve the given equation for ?. Find the approximate value.
[(49.88% of 320.11) × (34.85% of 460.24)] ÷ √783.94 = ?
20% of 80 × 26% of 65 = ?
45.22% of (71.9 x 5.01) + 69.97 =?Â
5466.97 - 3245.01 + 1122.99 = ? + 2309.99
? + 39.99 X 3.01 = √624.99 X 10.01% of 49.99
123% of 3825 +2745 =11800 - ?
...- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
(?)2 + 4.113 = 24.92 – 32.03Â
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
? % of 759.96 + 932.99 = 1237.01
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