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To find the area of quadrilateral ABCD where diagonals AC and BD intersect at O, and the quadrilateral is cyclic or the diagonals are perpendicular, use the formula:
Compute the diagonals:
Substitute into the formula:
The area of the quadrilateral is 150 cm².
A person spent 20% of his monthly income on food and 70% of the remaining on rent. If amount spent on rent is Rs 840, then find the amount spent on food.
Out of the total candidates who appeared for an interview consisting of only a GD round and a Technical round:
65% of cand...
A candidate who gets 26% marks fails by 10 marks but another candidate who gets 46% marks gets 15% more than the passing marks. Find the maximum marks.
Suresh spent 25% of his monthly salary on rent, 50% of his remaining salary on food and clothes, and saved the rest. If he saved Rs. 9,000 and the amoun...
A man spends 75% of his income. His income increases by 20% and his expenditure also increases by 10%. Find the percentage increase in his savings.
Income of A is twice the income of B. B and A spend 65% and 75% respectively of their incomes. Find the savings of A, if B saves Rs. 7000 in a month.
Anita has some money left after spending 20%, 10% and 30% of monthly salary on rent, electricity and shopping respectively. The remaining money with Ani...
In an election there are a total of 4,000 registered voters out of which x% of voters did not cast their votes and 180 votes are declared invalid. The w...
If salary of Sunil is 30% more than that of Manish, then salary of Manish is how much percent less than that of Sunil? [correct upto two decimal places]
