Answer:
Step-by-step explanation:
|GI| = 2•16 = 32
|JI| = 28
|GJ|² + |JI|² = |GI|² {Pitagoras}
|GJ|² + 28² = 32²
|GJ|² + 784 = 1024
|GJ|² = 240
|GJ| = √240 = √[16•15] = 4√15
A = |GJ•|JI| = 28•4√15 = 112√15 = 433.7741... ≈ 434
