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Here s = semi perimeter = (7 + 8 + 9)/2 =12m So area of this triangle = √(12(12 - 7)(12 - 8)(12 - 9)) = √(12 × 5 × 4 × 3) = 12√5 m 2
The average number of books on history, polity and geography in a library is 110, and the average number of books on history and geography is 120. If th...
The certain sum amounts to Rs11313.5 in 2(1/2) years at 12% p.a., interest compounded 10 months. The sum (in Rs) is:
The average number of sweets distributed in a class of 90 students is 6. If lsquo;xrsquo; number of students newly joined the class and the average beco...
The average of 25 numbers is 22.The average of first 12 numbers is 14 and that of the last 12 numbers is 17. What will be the 25th number?
60% of 3840 +? + 30% of 4380 = 40% of 8340 + 10% of 3480
There are 15 natural numbers whose average is 30.6. The average of the first 8 numbers is 28, and the average of the last 8 numbers is 33. Find the eigh...
Average weight of 10 nurses is 32 kg. If the weight of one more nurse is included, then average weight is increased by 2 kg. Find the weight of the newl...
The average weight of 10 books is 5 kg. If 6 new books are added, the new average increases by 3 kg. What will be the average weight of the 6 new books?
Average marks scored by Vineet in five subjects are 70. The average marks scored by him (excluding his highest and lowest marks) are 50 and lowest marks...
The average weight of 12 persons increases by 3.5 kg when a new person comes in place of one of them weighing 58 kg. The weight of the new person is
