Here s = (a+ b+ c )/2 = (21 + 28 + 35) /2 = 84/2 = 42 cm If a, b & c are medians of any triangle , then area of the triangle = 4/3 √(s(s - a)(s - b)(s - c)) = 4/3 √(42(42 - 21)(42 - 28)(42 - 35)) = 4/3 √(42 × 21 × 14 × 7) = (4/3) × 294 = 392 cm²
Suyash have total amount of Rs.2500 out of which, he spent 25% on food, 40% of the rest on travelling. Out of remaining amount he spends Rs.540 on misce...
Fresh fruits contain 85% water and dry fruits contain 20% water, then how many kg of dry fruits will be obtained from 64kg fresh fruits?
The income of ‘A’ increases by 28% every year. If the present income of ‘A’ is Rs. 40960 and his expenditure 2 years ago from now was Rs. 12000,...
In an election with two candidates, the winner secured 66% of the total valid votes and defeated the opponent by a margin of 1,440 votes. Your task is ...
Ravi visits an electronics store with a certain amount of money. He can buy 50 USB drives or 25 headphones with the money he has. However, he decides to...
In an examination, 4 marks are given for each correct answer and 1 mark is deducted for each wrong answer. If a candidate solved 75 questions and got 12...
In an assessment, Harsh scored 38 marks less than Simran. Simran scored 28 more marks than Alok. Kunal scored 100 marks which is 23 marks more than Hars...
The number of boys and girls in a school is 180 and 260 respectively. 25% of boys left the school while 40 girls took admission in the school. Find the ...
Sujata allocated 40% of her annual income to a fixed deposit. She then spent 25% of the remaining amount on house rent and 15% on food. After these expe...
In January, 'A' earned Rs. 16,000 and spent 75% of it. The following month, his income rose by Rs. 4,000, and his savings went up by Rs. 2,000. Calculat...
