19.5cm2
15.0cm2
13.0cm2
9.3cm2
Correct answer is B
Perimeter of △ PQR = PQ + QR + PR
24cm = 6cm + 8cm = PR
24 = 14 + PR
PR = 24 - 14 = 10cm
Area of △ PRS = 12×10×3cm3
= 15cm3
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