Question

the base and altitude of a triangle are (x+b) units and (x+11) units respectively. find its area​

Answer 1

Answer:

= $\frac{1}{2} [x^{2} + (b+11)x + 11b]$

Step-by-step explanation:

Area of Triangle = $\frac{1}{2}$ x Base x Altitude

= $\frac{1}{2} (x +b )(x +11)\\\\= \frac{1}{2} [ x^{2} + bx + 11x + 11b]\\\\=\frac{1}{2} [x^{2} + (b+11)x + 11b]$