Question

Somebody Help me solve this
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Answer 1

area = 144cm², which is gotten by 12×12

area of triangle = 1/2bh

1/2 × 8n ×18 = 144

72n = 144 divide both sides by 72 to get;

n = 2

Answer 2

144=8n*18\2
144*2=8n*18
288/18=8n
16/8=8n
n=2