Question

If anyone can answer my question please help :)

Answer 1

2.7

Explanation

Set it up as fractions and cross multiply.

1.8/2/4 = x/3.6

2.4x = 6.48

then divide by 2.4 and x = 2.7

Answer 2

Since they are similar you need to start by making ratios for each pentagon.
1.8/2.4 is the first and x/3.6 is the second. Now set them equal to each other and cross multiply.
1.8 X
___ = ____

2.4 3.6

2.4x= 6.48 Now divide both sides by 2.4

2.4x= 6.48
___ ____

2.4 2.4

X= 2.7