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Gnesinka [82]
2 years ago
11

I need help with 7th grade math please 30 points need help ASAP

Mathematics
2 answers:
kicyunya [14]2 years ago
5 0

Answer:

Area = 657 ft^2

Step-by-step explanation:

Heron's Formula: S=\frac{a+b+c}{2} ,

Area = \sqrt{s(s-a)(s-b)(s-c)}

s=\frac{20+21+29}{2}=\frac{70}{2} =45 ft

Area=\sqrt{45(45-20)(45-21)(45-29)}\\\\=\sqrt{45(25)(24)(16)}\\\\=\sqrt{432000}

= 657.267069

Area = 657 ft^2

GrogVix [38]2 years ago
4 0

Answer:

<u>210 ft²</u>

Step-by-step explanation:

Take the base and height of the triangle.

  • Base = 21 ft.
  • Height = 20 ft.

Solving for area :

  • A = 1/2 x base x height
  • A = 1/2 x 21 x 20
  • A = 10 x 21
  • A = <u>210 ft²</u>
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