Frostbite Frostbite
  • 21-04-2024
  • Mathematics
Middle School

Find the area of ΔDEF to the nearest tenth. ANSWERS: A) 127.8 square units B) 46.5 square units C) 63.9 square units D) 23.3 square units

Find the area of ΔDEF to the nearest tenth ANSWERS A 127 8 square units B 46 5 square units C 63 9 square units

Answer :

adefunkeadewole adefunkeadewole
  • 15-05-2025

Answer:

C) 63.9 square units

Step-by-step explanation:

From the above diagram, we can see that the triangle has 2 sides and and angle

The formula for the area of a triangle that has 2 sides and an angle = 1/2absinθ

θ = 70°

a = DE = 8 units

b = EF = 17 units

Area of ΔDEF = 1/2 × 8 × 17 × sin 70°

Area of ΔDEF = 63.9 square units.

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