Answer:
Area = 336 ft²
Explanation:
1. Find the area of the square:
It's given that one side of the square is equal to 12 ft. In a square, all sides are equal, so to find the area of the square you do base x height.
12 ft x 12 ft = 144 ft²
2. Find the area of one of the triangles:
Since we already know that all sides of the square are equal to 12 ft, we know that the base of all four triangles are equal to 12 ft.
It is also given that the height of the triangle (the dotted line) is 8 ft while the hypotenuse of the triangle is 10 ft.
So, to find the area of the whole triangle you need to do 1/2 base x height.
ft²
3. Multiply the area of one of the triangles with 4:
There are four triangles, so you want to take the area we got for one of the triangles and multiply that by four to get the total area of all the triangles.
48 x 4 = 192 ft²
4. Add the total area of all four triangles and the square together:
Now, for the final step, add the total area of all four triangles together along with the area of the square from Step 1 to get the final total surface area in square feet.
192 ft² + 144 ft² = 336 ft²
Final Answer: 336 ft²