Question
Perimeter of a square and circumference of a circle are
in the ratio 6:11, respectively. If area of the square is 36 cm2, then find the radius of the circle. (Take Ο = 22/7)Solution
Let the perimeter of the square and circumference of the circle be β6xβ cm and β11xβ cm, respectively. Area of square = a2 (Where βaβ is the side of the square) ATQ; 36 = a2 Or, a = 6 cm So, perimeter of the square = 6 Γ 4 = 24 cm So, circumference of circle = 24 Γ (11x/6x) = 44 cm Circumference of circle = 2Οr (Where βrβ is the radius) So, 44 = 2 Γ (22/7) Γ r Or, r = 7 cm Therefore, radius of the circle is 7 cm.
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.)...
If the difference between the compound interest (compounded annually) and the simple interest accrued over two years at a rate of...
β 27556.11 Β ΓΒ β 624.9 Β β (22.02) 2 Β =? Γ 5.95Β
(27.08)2 β (14.89)2 β (22.17)2 = ?
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.)...
βAβ and βBβ can build a wall in 8 days and 12 days, respectively. If βAβ started building the wall alone but after 4 days he was replaced by...
- 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.)
74.856% of 639.98 - 15.098 of β145 = ? of 14.972
11.89 Γ 2.10 Γ 4.98 Γ 4.03 Γ· 7.98 of 15.03 = ?
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