In \( \triangle \) XYZ, XKZ = 90O, XK = 15cm, XY = 35cm and YK = 8cm. Find the area of \( \triangle \) XYZ

Assessment: JAMB UTME - Mathematics - 1985 Subject: General Mathematics

Question 1 Report

In \( \triangle \) XYZ, XKZ = 90O, XK = 15cm, XY = 35cm and YK = 8cm. Find the area of \( \triangle \) XYZ

Answer Details
By Pythagoras, KZ2 = 252 - 52

KZ2 = (25 + 15)(25 - 15) = 400

KZ =  400  = 20

area of XYZ =  1 2 × 28 × 15

= 210 sq. cm

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