Question

Guys math homework trigonomerty plz help

Answer 1

• 19.313 m²

Explanation:

We know that:

• Area of octagon: A = 2(1+√2)a²
• a = side

Work:

• 2(1+√2)a²
• => A = 2(1+√2)2²
• => A = 2(1+√2)4
• => A = 8(1+√2)
• => A = 8 + (√2 x 8)
• => A = 8 + 11.313
• => A = 19.313 m²

Hence, the area of the octagon is 19.313 m²

Answer 2

19.3 m²

Steps:

Area of octagon : 2 ( 1 + √2 ) * a² ........ where a is length of each side

using the formula: 2 ( 1 + √2 ) * 2²

: 2 ( 1 + √2 ) * 4

: ( 8 + 8√2 ) m²

: 19.3 m² ...............our final answer in three significant fig