Question
The height of a sphere is 28 cm.
Find the surface area of the given sphere. (Take π = 22/7)Solution
ATQ, Surface area of sphere = 4 × π × radius² Height of sphere = Diameter of sphere So, radius of the given sphere = 28 ÷ 2 = 14 cm So, required area = 4 × (22/7) × 14² = 2464 cm²
808 ÷ (128)1/7 + 482 = 4 × ? + 846
17.8 + 3/7 of 89.6 = ?
What will come in place of (?) question mark in the following expression.
5(1/4) + 3(1/2) - 2(1/8) = ?
Simplify the following expressions and choose the correct option.
2500 ÷ (5²) + 60% of 240 = ?
(5/8) x 320 + 100 = ?% of 200 + 90
? % of 1200 = 20% of 30% of 3600
√ 729 × 5 – 220 % of 15 + ? = 120% of 160
(560 ÷ 32) × (720 ÷ 48) = ?
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.)...