Answer:
The formula for the perimeter of the sector of a circle is given below :
Step-by-step explanation:
Perimeter of sector = radius + radius + arc length
Perimeter of sector = 2 radius + arc length
Arc length is calculated using the relation :
Arc length = l = (θ/360) × 2πr
Therefore,
Perimeter of a Sector = 2 Radius + ((θ/360) × 2πr )
Answer:
No.
Step-by-step explanation:
2, 3, 5, 6
4, 5, 8, 10
If all of the sides are scaled, that must mean it is possible to maintain a ratio of each side.
2/4 = 0.5
3/5 = 0.6
5/8 = ?
6/10 = 0.6
No.
Answer:
the radius of the pool is 50.025 feet
Step-by-step explanation:
From the information given:
We can have a schematic view of a diagrammatic illustration in our mind where the distance of the pool to Lincy is (20 + r ) and the distance to the tangent is 49.
So; by using pythagoras theorem, since the radius meets the tangent at a right angle; we have:
2001 = 40 r
r = 2001/40
r = 50.025 feet
Answer: 0.2134
Step-by-step explanation:
Given : Mean readings on thermometers =
Standard deviation =
We assume that the readings on thermometers are normally distributed.
Let x be the random variable that represents the reading on a random thermometer.
To find z-score :
For x = -0.99
For x= -0.32
By using the standard normal distribution table , the probability that a randomly selected thermometer reads between -0.99 and -0.32 will be :-