Find the surface area of the smallest cube that can perfectly fit a sphere of volume 972π cm3 inside it.
Let the radius of the sphere be 'R' cm. 972π = (4/3) x π x R3 Or, 729 = R3 So, R = 9 So, length of edge of the cube = 9 x 2 = 18 cm Required area = 6 x 182 = 1944 cm2
What will be the amount if a sum of Rs. 6500 is placed at compound interest for 3 years while the rate of interest for the first, second and third years...
A took loan from a bank at the rate of 12%p.a. simple interest. After 5 years he had to pay Rs.7200 interest only for the period. The principal amount b...
The sum of four times of an amount ‘s’ and (s - 9.75) is ₹442. Find the approximate value of 's'?
Shankar borrowed Rs. 7,200 at simple interest and repaid an amount of Rs. 9,504 after 7 years. If the interest rate p.a charged for first 4 years was 5%...
A sum of Rs. 100 is invested at 10% per annum compound interest (compounded annually) for two years. How much interest will be received after two years?
Suman paid ₹9,600 in interest on a loan she obtained 5 years ago with a simple interest rate of 16%. What was the amount of the loan she had taken?
The difference between compound and simple interest on a sum of money for 2 years at 25% per annum is Rs. 880. The sum is:
"R" put Rs.(r + 5000) into a SIP that offered 12% annual simple interest for four years. He also made a three-year investment of Rs. (r - 5000) in the s...
Rs.5400 is divided into two parts such that if one part be invested at 6% and the other at 9%, the annual interest from both the investments is Rs. 435....
Rs. 5000 when invested at simple interest of r% p.a. amounts to Rs. 7200 in 24 months. If the same sum had been invested for 1 year at compound interest...
