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:
it may help you for study
Answer is 10(2k+5)
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Work Shown:
20k+50 = 10*2k + 10*5
20k+50 = 10(2k+5)
Note how we can distribute the 10 back in to check our work
10(2k+5) = 10(2k)+10(5) = 20k+50
so that confirms we have the right answer
Another thing to notice is that 10 is the largest factor that we can pull out of 20k and 50. The value 10 is the GCF (greatest common factor) of 20 and 50.
