Question

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

Explanation:

Step1: Find side length a using Pythagorean theorem

$a=\sqrt{10^{2}-5.6^{2}}=\sqrt{(10 + 5.6)(10 - 5.6)}=\sqrt{15.6\times4.4}=\sqrt{68.64}\approx8.3$

Step2: Calculate the perimeter

$P=10 + 5.6+8.3 = 23.9$

Answer:

$23.9$