I've attached a photo of the solution below. Hope it helps!
Answer:
The answer is 
Step-by-step explanation:
∵ √24 = 2√6
∵ 
∵ 
∴ 
The period is 11
Explanation
Answer:
48.96
Step-by-step explanation:
Perform the two multiplications from left to right:
2.23x3.42x6.42 becomes:
7.6266 · 6.42, or
48.96
Answer:
128.8cm^2
Step-by-step explanation:
area of circle with radius 6cm = π6^2
area of circle with radius 9cm = π9^2
shaded region is equal to π9^2 - π6^2
which is 41π
therefore the shaded region is = 128.8cm^2