Answer:
40 ft
Step-by-step explanation:
Perimeter is the sum of all 3 sides of a triangle.
For this particular triangle, add 8+20+12:
40
Answer:
12.56637061 ?????
Step-by-step explanation:
To find the difference of given expression:

First step is to subtract the whole number5 and 3.
So, 5 - 3 = 2.
Now we can find the difference of fractions.
To subtract the fractions , we need to find the common denominator.
Common denominator of 3 and 5 is 15.
So, we need to make both the denominator equal to 15.

Similarly, 
Therefore, 
=
= 
So, the difference of given expression is
.
So, the correct choice is C.
Answer:
3.69 C.
Step-by-step explanation:
if u use the calculator it will have a lot of numbers but to the nearest hundreth it is 68 rounded is 69