Answer: 6
Step-by-step explanation: as we already know, 45 is half of 90. So that means he is mowing 2 lawns in an hour. So in 6 hours he mows twice the amount.
Answer:
56.52 cm
Step-by-step explanation:
To find the circumfrence use this formula-> C=2πr
The Radius is 9 (and I'm assuming to use 3.14 for pi since it doesn't state whether to use 22/7 or 3.14)

C= 56.52 cm
87.36
This can be rounded to equal 87.4.
Hope this helps! :)
The value of Y is equal to 6.
Answer:
your right
Step-by-step explanation: