Write a function rule for tje area A of a triangle who’s base b is 2 cm less than seven times the height h What is the area of a triangle when tje height is 14cm
The function rule for the area A of a triangle can be expressed as:
A = (1/2) * b * h
Given that the base b is 2 cm less than seven times the height h, we can substitute b = 7h - 2 into the area formula:
A = (1/2) * (7h - 2) * h
When the height is 14 cm, we substitute h = 14 into the formula:
A = (1/2) * (7(14) - 2) * 14
= (1/2) * (98 - 2) * 14
= (1/2) * 96 * 14
= 48 * 14
= 672 cm²
Therefore, the area of the triangle when the height is 14 cm is 672 cm².