Answer:
22 ft^2
Step-by-step explanation:
The area of a table with diameter 6 ft
A = pi r^2 = pi (6/2) ^2 = pi 3^2 = 9pi
The area of a table with diameter 8 ft
A = pi r^2 = pi (8/2) ^2 = pi 4^2 = 16pi
Subtract 16pi-9pi = 7pi
Using 3.14 for pi
7 * 3.14
21.98 ft^2
To the nearest square foot
22 ft^2
Answer:
Step-by-step explanation:
U a calulator
You can use a factor tree, and if you dont know how to use one, look it up on youtube, theres tons
Answer:
Below in bold.
Step-by-step explanation:
No repetition.
There are a total of 7 numbers.
For the number to be even it must end in 0, 2 or 8.
The other 3 numbers will be the number of permutations of 3 from the 6 other numbers.
Number of 4 digit numbers ending in 0
= 6P3 = 6! / 6-3!
= 120.
Now the number could also end in 2 or 8,
so there are 3*120 = 360 4-digit even numbers (no repetition).
With repetition.
There are 3 * 7^3 = 1029 with repetition.