1-
156 lies between 144 and 169
So
lies between 12 and 13.
2- 
320 lies between 289 and 324.
So
lies between 17 and 18.
3- 
249 lies between 225 and 256
So
lies between 15 and 16.
Answer:
Step-by-step explanation:
Area of the shaded region =Area of square with side 10 cm - Area of circle with radius 5 cm

Answer:
47.746, answer choice C
Step-by-step explanation:
47.746
Answer:
4. b) an angle
5. b) the angles of a triangle
6. b) opposite, hypotenuse and adjacent
Step-by-step explanation:
4. To find sine, cosine, tangent, you use the sin, cos, tan key of the calculator.
If you are given the value of the sin, cos, tan, and you are looking for the angle, then you use the second function of the calculator.
Answer: b) angle
5. angles of a triangle
6. The sides that form the right angle are the legs. In trig, there is an angle of interest, so to distinguish between the legs, one leg is called the adjacent leg, and the other leg is called the opposite leg. The side opposite the right angle is the hypotenuse.
Answer: opposite, hypotenuse and adjacent
Answer:
The container can hold 18 gallons
Step-by-step explanation:
Assume the container can hold x gallons
∵ The container is
full with water
∵ It can hold x gallons
→ Multiply
by x to find the number of gallons in the container
∴ The number of gallons in the container =
x
∵ 4 gallons of water pouring out
∵ It is
full
→ Multiply
by x to find the number of gallons left in it
∴ The number of gallons left in the container =
x
→ The difference between the numbers of gallons is 4 gallons
∵
x -
x = 4
→ Subtract the terms of the left side
∴
x = 4
→ Multiply both sides by 9
∴ 2x = 36
→ Divide both sides by 18
∴ x = 18
∵ x represents the full of the container
∴ The container can hold 18 gallons