Answer:
No, 15/21 and 40/56 do not form a proportion.
Step-by-step explanation:
Answer:
it's 3/50
Step-by-step explanation:
Hi there! The answer is 100πcm^2
The radius of a circle can be found by dividing the diameter by 2. In other words : the radius is half of the diameter.
Therefore, the radius of a circle with a diameter of 20 cm is 10 cm.
The exact area of a circle can be found using the following formula:

In order to find our answer, we need to plug in the data from the question.

Hence, the answer is 100πcm^2.
Is it
3x-10= 3(-6)-10= -28
Y-5= -2-5=-7