Question
The length of a rectangular field are 51m and 30 m
respectively. A tank of length 9 m, breadth 6 m and depth 5 m is dug out at the middle of the field. The earth removed is evenly spread over the remaining part of the field. Find the rise in the level of the remaining part of the field?Solution
Volume of the earth dug out = 9 × 6 × 5 = 270 m³ The upper surface area of the field = 9 × 6 = 54 m² Total surface area of the field = 51 × 30 = 1530 m² Remaining area of the field (1530 – 54) = 1476 m² Volume of earth removed = Remaining surface area of he field × rise in level Rise in the level of the remaining part of the field = 270/1476 m = 270/1476 × 100cm = 18.29cm = 18.3cm
If '63a9b' is a five-digit number which is divisible by 72, then find the value of (a + 2b).
What is the greatest number that will divide 917 and 1337, leaving remainder 7 in each case?
The digits of a two-digit number ‘N’ are reversed to form a new number ‘M’. If M < N and N – M = 45, then which of the following maybe ‘N’...
Find the median of 2, 4, 6, 6, 7, 9, 14, 12 and 13.
Three fruit sellers P, Q and R have different quantities of fruits to sell. P and Q together have fifteen more than half of quantity what P and R togeth...
Nine numbers are arranged in decreasing order. The average of the first eight numbers is 50, and the average of the last eight numbers is 45. What is th...
Find the fourth proportional of 12, 24, and 30.
Find the number which is nearest to 457 and is exactly divisible by 11.
- For which values of x is the expression 25x - 5x² - 100 positive?
A two-digit number has a sum of its digits equal to 9. Additionally, if 27 is subtracted from this number, the resulting number has its digits reversed....
Relevant for Exams:
