Question
Find the cost of canvas 1.75 m wide at Rs. 50 per metre
required to build a conical tent of base radius 21 cm and height 28 cm.Solution
Here, r = 21 cm and h = 28 cm  Slant height, l = 35m Area of the tent =Area of canvas = 
rl = (  X 21 X 35)m² = 2310m² ∴ Length of canvas=   =  = 1320 m. ∴ Cost of canvas= 1,320 x 50 = Rs. 66,000
- If the mean proportion of 3.6 and 1.6 is 'k', then find the value of '5k'.
There are three numbers: A, B, and C. It is given that 45% of A, (3/5) of B, and 1.5 times C are all equal. What is the ratio of A, B, and C?
The ratio of two numbers P and Q is 6: 11 respectively. When 5 is added to P and 84 is subtracted from Q, then the ratio of P and Q becomes 5: 2 respect...
Rs 1080 was divided among Amit, Bhaskar and Charu in the ratio of 13:8:15 respectively. Find the amount received by Amit and Bhaskartogether.
A sum of money is divided among P, Q, R and S in the ratio of 8:9:13:14 respectively. If the share of R's is Rs. 1620 more than the share of Q, then wha...
Ratio of income of Prashant and Palak is 9:8. Income of Chhaya is 4/5 of income of Prashant and difference between income of Palak and Chhaya is ₹2400...
Two years ago the ratio of annual salary of three friends P, Q and R is 4 : 3 : 5. Every year since then the salary of P, Q and R increases by 10%, 12% ...
What is the mean proportion between 3 and 27?
The ratio of the two numbers is 7:13. 150% of the first number is equal to the 60% of the second number. Find the sum of both the numbers.
What is the fourth proportional to 2, 5, 12?
