Find the permitter of each polygon.

here you go Sofia

Step-by-step explanation:

23.2 is one side of the triangle

21.7 is another

since the triangle goes around that circle perfectly two of the sides have to be the same

so the other side is also 21.7  just add them

21.7 + 21.7 + 23.2= 66.6 for the perimeter of the triangle

Area = ½[√(a^2 − b^2 ⁄4) × b]

Area = 1/2 [ sqrt(23.2^2 - 21.7^2 / 4 ) *21.7]

Area = 1/2 [ sqrt(538.24 - 470.89/4 ) *21.7]

Area = 1/2 [ sqrt( 420.5175 ) * 21.7]

Area = 1/2 [ 20.50652335 * 21.7 ]

Area = 1/2 [ 444.991556 ]

Area = 222.4957

now use that to find the radius of the circle

Area = 1/2 * r * trig perim

222.4957 = 1/2 * r * 66.6

6.681554 = r

now find the circumference of the circle ( perimeter of circle)

circ= 2r

circ = 26.681554

circ = 41.98144

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}