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zimovet [89]
3 years ago
5

25 marks .

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
8 0
Pythagoras; a^2 + b^2 = c^2 So, (6.7)^2 + (5.5)^2 = 75.14 then square root to get, 8.668 (to 3 d.p) hope this helps!!
Dafna11 [192]3 years ago
6 0

Answer:

  • 8.67 m

Step-by-step explanation:

DF is the hypotenuse.

<u>Find DF:</u>

  • DF = \sqrt{DE^2+EF^2}
  • DF = \sqrt{6.7^2+5.5^2} = 8.67 m (rounded)
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