Answer:
The area of this sector is 224*pi cm² or approximately 703.72 cm²
Step-by-step explanation:
In order to calculate the area of a sector for which we have an angle in radians, we need to apply a rule of three in such a way that pi*r² is related to 2*pi radians in the same proportion as the given angle is related to the area of the sector we want to find. This is shown below:
2*pi rad -> pi*r² unit²
angle rad -> sector area unit²
2*pi / angle = pi*r² / (sector area)
2*pi*(sector area) = pi*r²*angle
sector area = [pi*r²*angle]/2*pi
sector area = r²*angle/2 unit²
Applying the data from the problem, we have:
sector area = [(16)²*(7*pi/4)]/2 = [256*(7*pi/4)]/2 = 64*7*pi/2 = 32*7*pi = 224*pi
sector area = 224*pi cm²
sector area = 703.72 cm²
Answer:
4.5
Step-by-step explanation:
Graph y=3x then find two points from the graph, then find the distance between them two and round 4.47 to 4.5
Answer:
£40
Step-by-step explanation:
Sum the parts of the ratio 5 + 1 = 6 parts
Divide £48 by 6 to find the value of one part of the ratio
£48 ÷ 6 = £8 ← value of 1 part of the ratio
Thus the larger part of the ratio is
5 × £8 = £40
Answer:
-3 - 6g = 1
explanation:
just substitute 3 for ever x in the problem
