Question
The inner radius of a hollow cylindrical pipe is 4.8 cm. If
the length of the pipe and the thickness of the pipe are 20 cm and 2.5 cm, respectively, calculate the volume of the pipe. (Use π = 22/7)Solution
ATQ,
Outer radius of the pipe = 4.8 + 2.5 = 7.3 cm
Volume of the hollow pipe = π × height × [(outer radius)² - (inner radius)²]
= (22/7) × 20 × (7.3² - 4.8²)
= (22/7) × 20 × (53.29 - 23.04)
= (22/7) × 20 × 30.25
= 1,290 cm³
Find the amount on Rs.7500 at 8% per annum for 3 years.
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2400 after 3 years. If the same amount is investe...
The difference between the simple interest and the compound interest on 25000/- at 10% per annum for 2 years is:
If the difference between compound interest (compounded annually) and simple interest earned in two years at 25% p.a., is Rs. 1,000, then find the sum ...
A sum is lent on compound interest for 2 years at 14% p.a. If the compound interest on the sum is Rs.5392.8, find the sum.
Raju invests a certain amount at an annual simple interest rate of 6% for 2 years. The total amount he receives after this period is then reinvested at ...
A certain amount of money, when invested at an annual compound interest rate of 'x%' compounded annually, grows to 1.5376 times its original value in 2 ...
Arjun borrowed Rs. 5000 at R% S.I. and Rs. 6000 at (R + 5)% S.I. for 2 years. The total interest paid was Rs. 2800. Find the rate at which he borrowed R...
if the interest is compounded half-yearly, calculate the amount when the principal is Rs.4000, the rate of interest is 22%.solve the question
Amit invested a total of Rs. 14,000, dividing the amount between two schemes: one offering compound interest (compounded annually) and the other offerin...
Relevant for Exams:
