1. Given A = πrl, make l the subject of the formula. 2. Given P =RT/V, make T the subject of the formula.

3. Given I =PRT/100, make T the subject of the formula.

4. Given V =πd^2h/4, make d the subject of the formula.
5. Given V = u + at, make t the subject of the formula.
6. Given T =A/R−r, make r the subject of the formula.

7. Given Q =R(B−T)/B, make B the subject of the formula.

8. Given P − mg =Mv^2/r, make:
a) v the subject of the formula.
b) m the subject of the formula.
9. Given m2 =a+b/a−b, make:
c) b the subject of the formula.
d) a the subject of the formula.
10. Given A =h(a+b)/2,express b as the subject of the formula.

11. R = √pm−q/q+cm, make m the subject of the formula.

12. Given n =1/d^2,make d the subject of the formula.

13. V = √a^2−x^2, make x the subject of the formula.

14. Given that P = r^2h, make h the subject of the formula.

15. If =brt/v−b, make r the subject of the formula.