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Need help with question a
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Need help with question a

Need help with question a-example-1
User Gbmhunter
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1 Answer

3 votes

Answer:

1.8 cm

6.3 cm²

Explanation:

AC⊥BC

BD=BC=x

  • (x+5)²+x²=7²
  • x²+10x+25+x²=49
  • 2x²+10x- 24=0
  • x²+5x-12=0
  • x=1.8

BC= 1.8 cm

Area of ABC= 1/2*1.8*7= 6.3 cm²

User Kaushik Evani
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