Luca is designing a propeller system that consists of 3 blades, each of which is identical. The blades are sectors of a circle that have radii of 4 inches and central angles of 20 . The blades are to be made from steel that weighs 16 grams per square inch. Determine the weight of the three blades together to the nearest gram.

Total weight of blades = ~134gm

Step-by-step explanation:

Radius of circle, = 4 inches

Central angle of sector =

For finding the weight of blades, we need to find the area of blades.

Area of circle, A =

We know that circle has a central angle of .

We can use unitary method to find the area of sector with angle .

Area of central angle =

Area of central angle =

Area of central angle =

Putting value of r = 4 inches

Area of blade:

We have 3 blades here, so area of 3 blades =

Weight of steel = 16 grams per square inch

Total weight of all 3 blades = 16 8.38 = ~ 134gm

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

hope this is what you were asking for!

step-by-step explanation: