1) we calculate the area of the circular piece of metal.
area=πr²
area=π(3.5 m)²=12.25π m² ≈ 38.48 m²

2)we calculate the total cost of the circular piece of meta by the rule of three.

$3.25-------------------1 m²
x--------------------------38.48 m²

x=($3.25 * 38.48m²) / 1 m²=125.06$

Answer: 125.06$

We can also calcultate the total cost of the ciucular piece of metal by the ratius.
Ratius=$3.25/1m²

Total cost=ratius * area of the circular piece of metal.
total cost=($3.25/ m²)*(38.48 m²)=$125.06

Answer: $125.06

4 0

3 years ago

The gazebo in the park is an octagon. Each side of the gazebo is 4 feet long. What is the perimeter of the gazbo A. 36 feet B. 3

elixir [45]

Well an octagon has 8 sides and if each side is 4 feet long then it is 8x4 so that equals 32.
Your answer is B) 32 Feet.

8 0

3 years ago