Question

10 cm 9 cm b what is the perimeter? if necessary, round to the nearest tenth. centimeters

Explanation:

Step1: Find the base length

This is a right triangle, so we use the Pythagorean theorem $a^2 + b^2 = c^2$. Here, $c = 10$ (hypotenuse), one leg $a = 9$, and we find the other leg $b$ (base). So $b = \sqrt{10^2 - 9^2} = \sqrt{100 - 81} = \sqrt{19} \approx 4.4$.

Step2: Calculate the perimeter

Perimeter of a triangle is the sum of all sides. So perimeter $= 10 + 9 + \sqrt{19} \approx 10 + 9 + 4.4 = 23.4$.

Answer:

23.4