Question
A wire, when bent in the form of a square encloses an
area of 484 sq. cm. If the same wire is bent in the form of a circle, what is the area enclosed by it?Solution
Area of Square =484. Side of wire (Square)=22 Length of wire =4×22=88cm ATQ- 2 π r =88 R =88×7 /22×2 =14cm And now an area of circle = πr² =22/7 ×14 ×14 =44×14=616 sq. cm
The mean proportion of 324 and 225 is:
The mean proportional of 9 and 16 is _____.
The ratio of the two numbers is 3:8. 140% of the first number is equal to the 60% of the second number. Find the sum of both the numbers.
Some amount was divided among A, B and C in the ratio 4:5:8. If the share of A is 32 less than share of C, then find the 1/4th of total amount (in Rs).
If A:B:C = 3:4:7 and (C - A + B) = 48, then find the value of (2C + A2).
The sum of three numbers is 324. If the ratio of the first to the second is 4:5 and that of second to the third is 7:9 then the second number is?Â
The ratio of the monthly incomes of Dinesh, Nikhil and Rohan is 64:73:81. If Dinesh’s monthly income is 10,496, then find Rohan’s annual inc...
The ratio of heartbreak to emotions is 1:2:3:4. The price of heart is inversely proportional to the square of emotions. If there is a loss of Rs 700 due...
A sum of money is divided among P, Q, R and S in the ratio of 5:6:10:11 respectively. If the share of R's is Rs. 2440 more than the share of Q, then wha...
A, B and C entered into a partnership by investing in the ratio of 6:3:4. At the end of the year, the total profit is in the ratio of 12:3:8. Find the r...
Relevant for Exams:
