Question
Inside a square land having perimeter equal to 76
metres, leaving aside a circular land of radius 7 metres, the remaining land needs to be levelled at a cost of 14 rupees per square metre. What is the cost of leveling?Solution
Let the length of each side of the square land = βxβ metres Then, perimeter of the land = 4x = 76 metres So, x = (76/4) = 19 So, area of the square land = x2 = 192 = 361 m2 Area of the circular land = Ο Γ radius2 = (22/7) Γ 7 Γ 7 = 154 m2 Therefore, area to be levelled = 361 β 154 = 207 m2 Cost of leveling = 207 Γ 14 = Rs. 2898
Find the approximate value of Question mark(?). No need to find the exact value.
71.92 Γ· 8.02 Γ 6 + 44.95% of 499.79 β β(80.91) β 10.03...
- 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.)
? = 685.24 + 1024.97 β 9.992Β Β
8.992 + (5.01 Γ 4.98) + ? = 224.03
- 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.)
(284.85Β Γ· 15.09) x 2.22 + 51.17 = 157.69 - ?
(79.79% of 800.24 - β224.75) Γ (2/5 of 499.71) Γ· (10% of 600.26) = ?
What approximate value will replace the question mark (?) in the following?
? β...
- 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.)
75.01 + 344.923 - 179.93 = ?3 of (β678 + 3.89)
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