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Let the perimeter of the square and circumference of the circle be ‘7x’ cm and ‘11x’ cm, respectively. Area of square = a2 (Where ‘a’ is the side of the square) ATQ; 49 = a2 Or, a = 7 cm So, perimeter of the square = 7 × 4 = 28 cm So, circumference of circle = 28 × (11x/7x) = 44 cm Circumference of circle = 2πr (Where ‘r’ is the radius) So, 44 = 2 × (22/7) × r Or, r = 7 cm Therefore, radius of the circle is 7 cm.
Rs 2000 are invested at 5% per annum simple interest. If the interest is added to the principal after every 15 years, the amount will become Rs 4,000 af...
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The simple interest earned on ₹3,000 at a rate of 8% per annum for 4 years is ₹x. If ₹2,520 is the simple interest earned on ₹5,000 at a rate of...
What sum of money will become Rs.1352 in 2 years at 4 percent per annum compound interest?
A and B invested Rs.2x and Rs.2400 in a scheme at simple interest at 8% p.a. The investment time of B is 1 year more than that of A.The ratio of interes...
