What is the area of a semi circle w pi being 3.142 and a diameter of 19cm

Step-by-step explanation:

Area of semi circle is =pie × r^2 /2

And d=2r or r =d/2

So r =19/2

Thus area of semi circle is = 3.142×19×19/2×2×2 = =141.78 sq.cm

Step-by-step explanation:

Area of circle is A= pi *r ^2=283.38

while area of semi cirlce is half of total 283.385/2= 141.69

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

if she was to only spend a dollar she can get 1lb

step-by-step explanation: