Answer:
4: A, D
5. Yes
Explanation:
4 -
We can find the area of a triangle by multiplying the base and height, and then dividing that by two. The formula used to find this is a = b*h / 2, where a = area, b = base, and h = height. Plugging in the base and height for this triangle into the equation gives us the following:
A:
a = 15*3 / 2
And if we solve this equation we get:
a = 22.5
D:
a = 9*5 / 2
And if we solve this equation we get:
a = 22.5
When solving B and C, we get 24 and 17.5, not 22.5.
5 -
As mentioned previously, we can find the area of a triangle by multiplying the base and height, and then dividing that by two. The dimensions of this rectangular flag are 6x10 units. Since both triangles in this flag have those dimensions, they will be the same size, which is 30 units.