A is the area of the square with side S units. Write the formula of area making S as the subject.

A is the area of a circle with radius r units. Write the formula of area, making r as the subject.

A is the area of the rectangle with length l units and breadth b units. Rewrite the formula for area making l as the subject.

Write the formula for area of a circle.

The area of an equilateral triangle is A=(h^(2))/(sqrt(3)) , where h is the length of the altitude. Write the formula making h as the subject

The area of a triangle with base x unit is equal to the area of a square with side x sq unit. Then, the altitude of the triangle is