Solve for  z  in the problem below:

4/5  =  z/20

a. z = 16

b. z = 80

c. z = 13

d. z = 5

A

Step-by-step explanation:

Given

=

Multiply both sides by 20 to clear the fractions

16 = z → A

A. z = 16

Step-by-step explanation:

Multiply both sides by 20 isolate the variable z.

Multiplying by 20 will give us 16.

Therefore, z is equal to 16.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

a

step-by-step explanation: