Solve 40=x*pi*0.02*0.5*(120-20)

$$40 = x \times \pi \times 0.02 \times 0.5 \times ( 120 - 20 )$$

Solve for x

$$x = \frac{40}{\pi} \approx 12.732395447$$

Steps for Solving Linear Equation

Multiply 0.02 and 0.5 to get 0.01.

$$40=x\pi \times 0.01\left(120-20\right)$$

Subtract 20 from 120 to get 100.

$$40=x\pi \times 0.01\times 100$$

Multiply 0.01 and 100 to get 1.

$$40=x\pi$$

Swap sides so that all variable terms are on the left hand side.

$$x\pi =40$$

The equation is in standard form.

$$\pi x=40$$

Divide both sides by \pi .

$$\frac{\pi x}{\pi }=\frac{40}{\pi }$$

Dividing by \pi undoes the multiplication by \pi .

$$x=\frac{40}{\pi }$$