What? if you're looking to solve it using a = 3
then the answer will be
First, you need to find the area of the rectangle. As you already know, the formula for area is length times width. So, you would need to do 7 times 6, which is 42. Now, the triangle is a little more complicated. the height is about 2 and the base is 6. 6 times 2 is 12, but if you remember the area of a triangle, it's B times H divided by 2, so 12 divided by 2 is 6, so 42 plus 6 is 48. I THINK that is the surface area :)
Answer:
4.002
Step-by-step explanation:
12 x (.5) = 6
6 x (.667) = 4.002
3x + 7(3x + 2) + 4x - 5
Distribute the parenthesis.
3x + 21x + 14 + 4x - 5
Add like-terms
28x + 9 is your simplified expression.
