Question
The curved surface area of a
right circular cylinder with a radius of 7 cm is 440 cm². If the height of the cylinder is increased by 50%, what will be its volume?Solution
ATQ, Curved surface area of the cylinder = 2 × π × radius × height = 2 × (22/7) × 7 × height = 440 So, height of the cylinder = 440 ÷ 44 = 10 cm Increased height of the cylinder = 10 × 1.5 = 15 cm So, volume of the cylinder = π × radius2 × height = (22/7) × 72 × 15 = 2310 cm3
12.5% of 45 % of 480 + 957/29 = ? -14 × 15
What will come in the place of question mark (?) in the given expression?
{(2/15) + (12/25)} of 375 + 190 = ?% of 375
110 ÷ 5.5 + (?)3 ÷ 12 = 20(2/3)
(72 × 52 + 1555 )/(79+60) = 2000 ÷ ?
Determine the simplified value of the given mathematical expression.
(22² × 8²) ÷ (92.4 ÷ 4.2) =? × 32
What will come in the place of question mark (?) in the given expression?
23 X 35 - ? = (132 + 16) X 3 + 25
120% of 25 + 80 X 2 = ?2 - 6
Find the value of (x + y)² - (x - y)², where x = 15 and y = 7.
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