Mathematics
The given figure shows a right triangle ABD with sides 15 cm, 20 cm and 25 cm. The triangle is revolved about its hypotenuse, find the volume of the double cone so formed. (Take )
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A man invests ₹ 11,000 in ₹ 100 shares paying 10% dividend. If his annual income from these shares is ₹ 1,000, then the market value of each share is :
₹ 100
₹ 120
₹ 110
₹ 220
Geeta needs ₹ 31,800 at the end of 2 years from now. How much money, should she deposit in a recurring deposit account to get the required amount ? The rate of interest is 10%.