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Let the radius and height of the cylinder be r and h cm respectively. ∴ h = 1.20r Total surface area of the cylinder = 16940 = 2πr(h + r) ∴ 16940 = 2πr(1.2r + r) = 2πr(2.2r) = 4.4πr2 ∴ 16940 = (8.8/2) × (22/7) × r2 = 16940 x 7 x 2/22 x 8.8 ∴ r2 = 1225 ∴ r = 35 and h = 42 Amount of water displaced = Volume of the right circular cylinder = πr2h = (22/7) × (35)2 × (42) = 161700 cm³
800 + 900 X (3)-2 - ? = 25 X 60 ÷ 2
(60/15) × 25 + 15 2 – 18% of 200 = ? 2
Find the unknown value of' x' in the proportion $$(5x + 1) : 3 = (x + 3) : 7
30% of 60% of 1800 + 13 × 14 = (? ÷ 75) × 5
4261 + 8234 + 2913 + 8217 + 6283 + 4172 =?
1231 + 1312 + 2113 – 3211 = ?
[4(2/3) + 5(1/6)] × 45% of 240 = ?
1200 - 60 X 6 + 30 = 30 X 20 + ?
Find the simplified value of the given expression:
8 of 7 ÷ 2 × 5² + √36 – 10