Question

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

Answer 1

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

Answer 2

Answer:

210 ft²

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 = 210 ft²