The area of the sector is 42.4 feet and the area for the second is 50 :)
Answer:
+5
Step-by-step explanation:
Let's analyze the sine function first:

we know that this is periodic function with values between -1 and 1.
Now let's consider the function of the problem

Here we have basically multiplied the previous function by a constant number, -5. Therefore, we have:
- when 
- when 
So, the values of the function

are between -5 and +5, and so its maximum value is +5.
The ratio of the areas is the ratio of the squares of the sides ( which is 10:15 or 2:3) so the answer is
2^2 : 3^2 = 4:9.
The ratio of the perimeters = ratio of corresponding side = 2:3.
Zero is an integer but not a natural (counting) number.
Most square roots of integers are not rational numbers.
√2, √3, √5, √6, √7, and (pi) are real, irrational numbers.