Given:
circle inscribed in a square.
Side length of the square = diameter of the circle.
Let x side length and diameter.
Area of a square = x²
Area of a circle = πr²
r = radius ; half of the diameter. = x/2
Area of a circle = π * (x/2)² or π (x²/4)
Ratio of the area of the square to the area of the circle
x² : π(x²/4) or x² / πx²/4
x² * 4/πx² = 4/π
Answer:
11
Step-by-step explanation:
22-11=11
Answer:
300 km/hour
Step-by-step explanation:
Speed = distance/time
= 900km/3 hours
=300km/hour
Answer:
25%
Step-by-step explanation:
she earned $1,000
she spent $250
250/1000 = 0.25
0.25 x 100 = 25%
Answer:
A: 238.455 L
B: 120 containers
Step-by-step explanation:
A:
31.5 × 2 = 63 gallons
63 gallons = 3.785 × 63 = 238.455 L
B:
because we want to pour 238.455L oil into 2L containers,we can do this:
238.455 ÷ 2 = 119...0.455
we can pour the oil into 119 containers,but there is still 0.455L oil.
So,we need one more containers for 0.455L oil.
119 + 1 = 120 containers.