Question

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

Answer 1

210 ft²

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

Answer 2

Area = 657 ft^2

Explanation:

Heron's Formula:
`S=(a+b+c)/(2)` ,

Area =
`√(s(s-a)(s-b)(s-c))`

`s=(20+21+29)/(2)=(70)/(2) =45 ft`

`Area=√(45(45-20)(45-21)(45-29))\\\\=√(45(25)(24)(16))\\\\=√(432000)`

= 657.267069

Area = 657 ft^2