Question
The total surface area of a square-based right pyramid
is 1536 m², of which 37.5% is the area of the base of the pyramid. What is the volume (in mᶟ) of this pyramid?Solution
Total surface area = 1536 m² Base area = 37.5% of 1536 = 576 m² Side of bases = √576 = 24 m Lateral surface area = 1536-576 = 960 m² Slant height = 2x24x L= 960 L = 20 m L2=h²+ (24/2)2  400 =h² + + 144 h2 =400-144=256 h = 16 m Volume = 1/3 ×area of base ×h =1/3 ×576×16 =3072m3.
837.04 × 4.02 + 40.04% of 3049.98 – 3667.82 = ? 2 – 60.87
`sqrt623.798` × 24.034 +`sqrt403.898` × 17.907 =?
A wire is bent to form a square whose sides are of 132 cm. If the same wire is bent to form a circle, then find the area (in cm2) of the circ...
What will come in place of the question mark (?) in the following series?
50, 25, 25, ?, 75, 187.5
(14.66)2 + (343.84 ÷ 3.88 - 55.87) = ? + 91.23
- 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.)
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.)...
(27.08)2 – (14.89)2 – (22.17)2 = ?
What will be the approximate value of the following questions.
(√143.74 + 29.89% of 720.27) × (5/9 of 539.79) = ?
(124.99)² = ?
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