Question
The area of four walls of a room is 140 cm2.
If the length and breadth of the room were equal and the height of the room is 5 cm, then what is the area of the floor?ÂSolution
According to question,  => l = b  Area of the wall = 2(l + b)h  => 140 = 2(l + l) × 5 => 140 = 4 × l × 5 => l = 140/20 = 7 cm  Area of the floor = l × b = 7 × 7 = 49 cm2Â
More Mensuration Questions
`sqrt(7744)` Â Â -Â `sqrt(4761)` +Â `sqrt(8281)` Â +Â `sqrt(5625)` + ? = 1856Â
25% of 140 + 2 × 8 = ? + 9 × 5
What value should come in the place of (?) in the following questions?
320 + 162 – 55% of 720 = 5 * ?2
√10000 × √8100 - (50)² = √(?) + (80)²
33 × ?2 – 6 × 5 = 3270
(3/7) of 700 + 33(1/3)% of 339 - 69 =?
? % of 1200 = 20% of 30% of 3600
Simplify: 3√50 − 2√8 + √18
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
5/2 of 5/6 of 12/5 of 54 % of 5250 = ?
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