Answer:
Radius = 9
Step-by-step explanation:
Circumference = 2πr
2πr = 18 ×3.14
2πr = 56.5
6.28r = 56.5
r = 56.5/6.28
r = 9.04 round off , 9
Answer:
-2
Step-by-step explanation:
f(x) = x² +3x
so f(-1) means f(x= -1) so wherever you see a "x" in your equation you put a "-1"
f(-1) = (-1)² +3*(-1) = 1 -3 = -2
Answer:
- 33 cm
- 27 m
6. 7mm
dont remember how to do the rest
Step-by-step explanation:
