Answer:
pi×diamiter = circumference
pi÷circumference = diamiter
3.14159265358979 (pi) ÷ 16
Step-by-step explanation:
-3 is a negative number. Negative numbers sit to the left of 0.
If a number lies to the left of another, it is smaller than the other.
So, -3 is smaller than zero, because be definition every negative number is smaller than zero.
Pi goes on forever, but is usually just used as 3.14
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For triangle a use Pythagorean theorem to find the hypotenuse.
A^2+b^2=c^2
15^2+9^2=c^2
225+81=306
C^2=306
C=17.49 or square root of 306
For b) 18^2+B^2=23^2
324+B^2=529
B^2=205
B=14.32 or square root of 205