Question

answer question 18. please with correct answer

Answer 1

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∆POQ is a right angle


QP²=OP²+OQ²

QP²= 12²+ 16²

QP²= 400

QP = 20 cm

IN ∆ PQR (use herons formula )

S= 20+52+48/2=120/2 = 60 cm

A=√ S(S-a)(S-b)(S-c)

A=√ 60(60-20)(60-48)(60-52)

A=√ 60×40×12×8

A=√ 6×10×4×10×6×2×4×2

A= 6×10×4×2

A=480 cm²