Question

Polygon PQRS below has PQ=QR=SR and PS is of length 45cm . If the perimeter of the polygon is 120cm, find the length of side PQ

Answer 1

Answer:

25 cm

Step-by-step explanation:

perimeter = 120

so, PQ+QR+SR+PS = 120

PQ + PQ + PQ + 45 =120    (PQ=QR=SR and PS is of length 45cm )

3 (PQ) = 120 - 45 = 75

PQ = $\frac{75}{3}$ =25