Wall area calculation

A wall is $m metres long and $v metres high. A door $b centimetres high and $d centimetres wide is set into the wall. Find the total area of this wall (excluding the door).

Final Answer:

S = m² a*v - b*d/10000

Step-by-step explanation:

$$\begin{gathered} S_1=a\cdot v{\text{m}}^2 \\ {S}_2=(b/100)\cdot (d/100){\text{m}}^2 \\ S=S_1-S_2 \\ S=a\cdot v-b\cdot d/10000 \end{gathered}$$

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