Question

The base of a rectangle is$x+3$and height X.What is the area?

Short answer

The area of the rectangle is$(x^2+3x)sq.unit$

Step-by-step solution

Step 1. Given information.

Base of the rectangle$b=x+3$

Height of the rectangle$h=x$ .

Step 2. Concept  Used.

If b is the base of the reactangle and h is the height of the rectangle.

Then, the area of the rectangle is$A=b\times h$

Step 3. Let’s calculate the area of the rectangle.

Put the value of base and height into the formula and find the area.

Area of the rectangle :

$\begin{array}{c}A=(x+3)x\\ =(x^2+3x)sq.unit\end{array}$

Therefore, the area of the rectangle is$(x^2+3x)sq.unit$ .