Answer is C. 30
cause x is 15
It will take her 4 days to read 1/3 of the book.
The answer is 4.
I believe the answer is 11.24 units.
If you are given an isosceles triangle with a vertex angle of 38 degrees, that would tell you that the other angles in the triangle are both 71 degrees.
In this case, I would use ratios of an angle to it's opposite side. Therefore, we would have: (38°)/X = (71°)/(21 units)
Now you can solve for X, algebraically, and the answer I got was 11.24 units.
Fear not, for Gandalf is here! What you need to do is find the area of the circle. The formula is A = πr2 (pi times squared r). So, in other words, you cut the diameter in half (5 ÷ 2 = 2.5 feet) and do this: 2.5 × 2.5 (this is the squared 2.5). Next, you multiply the factor (which is 6.25) by 3.14. So, you get 19.623, also known as 19.6 if you're rounding to the nearest tenth. Ciao!