How do u write Two-thirds of the sum of 8 and y plus the product of 4 and r

2/3 ( 8 + y ) + 4 r

Step-by-step explanation  

2/3 is the two thirds

The sum of 8 and y is 8 + y

So, two thirds of the sum of 8 and y is  2/3 ( 8 + y )

Then, the product of 4 and r is 4 r

Therefore; Two-thirds of the sum of 8 and y plus the product of 4 and r is 2/3 (8 + y) + 4 r

tube or goog would be a great resource to with that question

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: