How do you find surface area

Apath 3 m wide runs around the inside of a square park inside 60 m.find the area of the path.pls

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato

What does the sign of the slope tell you about a line?