Your car's back window is in the shape of a trapezoid with the dimensions shown. the 16 -inch window wiper cleans a part of the window in a semicircular pattern. what is the approximate area of the window that is not cleaned by the wiper?

338 squared inches is the approximate area of the window that is not cleaned by the wiper.

Step-by-step explanation:

Area of trapezoid shaped widow: A

Length of the longer side of window= a = 42 inches

Another length of window = b = 32 inches

height of the window = h = 20 inch

Area of trapezoid =

Area of the semicircle  = A'

Radius of the circle = r = 16 inch

Area of the semi-circle =

Area of the window left uncleaned :

= A - A' =

338 squared inches is the approximate area of the window that is not cleaned by the wiper.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.