Answer:
0.16
Step-by-step explanation:
Since the scale factor is greater than 1, this dilation will be an enlargement. Therefore, you multiply 7.2 times 8.1 to get 58.32. This question asks for diameter, so multiply 58.32 times 2 to get 116.64 in.
Let x be the number in the problem. When it states that x is "no more than -10", it means than it is less than or equal to -10. So, we have

x≤-10
In order to cancel out the

on the left and isolate x, we multiply both sides by

(since

·

=1). Thus, we have
x≤-10·

=-15
Therefore, x≤-15

According to given figure, The Triangle BDC is a right angled Triangle (Angle D = 90°)
So, we can apply Pythagoras theorem to find the Side a (Hypotenuse)
Now, let's solve ~
Therefore, Length of side a is 5 units ~