Question

1. find the perimeter and area of this triangle.

9 km
5 km
12 km
17 km

Explanation:

Step1: Calculate perimeter

$P = 9 + 12 +17 = 38$

Step2: Calculate area

$A = \frac{1}{2} \times 17 \times5 = \frac{85}{2} = 42.5$

Answer:

Perimeter: $38$ km, Area: $42.5$ km²