Answer:
21+3x
Step-by-step explanation:
3(7+x)
3*7+3*X
21+3x
Answer: 50.24 square centimeters.
Step-by-step explanation:
Given: The radius of the circular lens of a magnifying glass = 4 centimeters
The area of a circle is given by :-
, where r is the radius of the circle.
Then the area of the circular lens of a magnifying glass is given by :-

Hence, the area of the circular lens of a magnifying glass = 50.24 square centimeters.
Answer:
I could, but Algebra 1 or 2? Also, what are you learning about?