Just think what do all the numbers have in common? What number can relate to all of them and is the largest number? That's how you find GCF, straight of the bat I can see that the GCF is 5 because nothing higher than five can match up to all of them, in other words nothing other than 5 or higher than 5 is a factor of all the numbers.
4√400 / 4√ 5 ( both are 'fourth roots ')
= 4√ (400/5)
= 4√80
= 2.99 to nearest hundredth
Ok so the rectangle is 12x6 which is 72. The entire top part is 18 which means the other triangle side is 6. 6x6 = 36 so 72+36 is 108
Since the question is asking for the perimeter, you have to find the length of the sides of the rectangle.
If one of the sides has a length of 5 yards, then the side parallel to that side also has a length of 5 yards.
So you have to multiply 5 with 2
5×2=10
If the other side has a length of 3 yards, then the side parallel to that side also a length of 3 yards
So you have to multiply 3 with 2
3×2=6
Then you add the two answers
10+6=16
So you get 16 yards
Hope this helps!
