Question

3. What is the area of the triangle below? (1 point) O 6.0 ft2 O 8.6 ft2 O 15.0 ft? O 17.2 ft2 ​

Answer 1

A ≈ 8.6 ft²

Explanation:

the area (A) of the triangle is calculated as

A =
`(1)/(2)` × 7 × 3 × sin55°

=
`(1)/(2)` × 21 × sin55°

= 10.5 × sin55°

≈ 8.6 ft²( to 1 dec. place )