42 cm a circular wire of diameter is folded into a rectangle whose sides are in the ratio 6: 5. What will be the area of the rectangle?

What will be the change in the volume of a rectangular solid by increasing its length by 10 percent and decreasing its width by 10 percent?

Each side of an equilateral triangle is 4 cm. What will be its area?

What will be the difference between the compound interest and simple interest of 2 years at the rate of 5 percent annual interest at Rs. 4,000?

If the purchase price of an article is equal to 80 percent of its selling price then there will be profit.

If there is a 25 percent reduction in the price of rice, a person can buy 10 kg more rice for Rs 600. The reduced price per kg of rice is.

If  $$ {A\over2}={B\over 3}={C\over 4}$$ then what is the value of $$ {A+B+C}\over C

3x² = 36 then what is the value of x?