In worksheet on changing the subject of a formula we need to change the subject of the formula is a variable which is expressed in terms of other variables involved in the formula.

(a) **A = l × b **

make **b** as subject

(b) **L = C.P. – S.P. **

make **S.P. **as subject

(c) **V = u + ft**

make **t** as subject

(d) **S = D/T**

make **D** as subject

(e) **V = πr²h**

make **r** as subject

(f) **C = 2πr**

make **r** as subject

(g) **P = 2 (l + b) **

make **l** as subject

(h) **S = n/2 (a + l)**

make **a** as subject

(i) **A = P {1 + (Rn/100)} **

make **n** as subject

(j) **1/x = y + z/y + 1**

make **y** as subject

(k) **y = mx + c**

make **x** as subject

(l) **D = b² - 4ac**

make **c as subject **

(m) **T = 2π √(l/g)**

make **g** as subject

(n) **S = ut + 1/2 gt²**

make **g** as subject

(o) **C = 2πr (h + r) **

make **h** as subject

(p) **h² = p² + b² **

make **b** as subject

(q) **S.P. = {(100 + G%) C.P.}/100**

make **C.P.** as subject

(r) ** HM = 2ab/(a + b)**

make **a** as subject

(s) **I = (P × R × T)/100**

make **R** as subject

(t) **A = 1/2 (l₁ + l₂) h**

make **l₂** as subject

Answers for worksheet on changing the subject of a formula are given below to check the exact answers of the questions.

● **Formula**

**Formula and Framing the Formula**

**Change the Subject of a Formula**

**Changing the Subject in an Equation or Formula**

**Practice Test on Framing the Formula**

● **Formula - Worksheets**

**Worksheet on Framing the Formula**

**Worksheet on Changing the Subject of a Formula**

**Worksheet on Changing the Subject in an Equation or Formula**

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