The area of a square piece of cardboard is 81 square inches. What is the length of the cardboard?A. 8 inches
B. 9 inches
C. 20.25 inches
D. 10 inches

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

The area of a square is found in the formula

$A=s^2$

We have the Area value so we will plug it in:

$81=s^2$

Take the square root of both sides to undo the square on the s to get that

s = 9

Using PEMDAS (Order of Operations), what is the value of the expression 4+3^2+(4−12)? A. 15. B. 17. C. 13. D. 10.