iman5531812p28z3e iman5531812p28z3e
  • 17-02-2018
  • Mathematics
contestada

Construct a right triangle when one side is 4 cm and sum of the other side and hypotenuse is 8cm

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jcherry99
jcherry99 jcherry99
  • 18-02-2018
4^2 + x^2 = (8 - x)^2
16 + x^2  = 64 - 16x + x^2 the two x^2 cancel out
16 = 64 - 16x
- 48 = - 16x
x = 3

check
4^2 + 3^2 = (8 - 3)^2
16 + 9 = 5^2
25= 25
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