Answer:
A = 315
Step-by-step explanation:
Formula = (b * h) / 2
21 * 30 = 630
630 / 2 = 315
315
The area of a triangle is found by the formula
A = 1/2 bh where b is the length of the base and h is the height of the triangle
A = 1/2(30) (21)
A =315
