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  • 21-11-2020
  • Mathematics
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Find f. Write your answer as a whole number or a decimal. DO NOT ROUND

Find f Write your answer as a whole number or a decimal DO NOT ROUND class=

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Ashraf82
Ashraf82 Ashraf82
  • 22-11-2020

Answer:

f = 8 feet

Step-by-step explanation:

In Δ EBC

∵ DF ⊥ BE

∵ CB ⊥ BE

∴ DF // CB

∵ D is the mid-point of CE

∵ DF // CB

∴ F is the mid-point of EB

∵ DF joining the mid-points of EB and EC

∴ DF = [tex]\frac{1}{2}[/tex] CB

∵ CB = f and DF = 4 ft

∴ 4 = [tex]\frac{1}{2}[/tex] f

→ Multiply both sides by 2

∴ 8 = f

∴ The value of f is 8 ft

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