Find the total area of a round section of land that has a 2.5-foot-wide enclosure of pebbles surrounding a round garden of flowers.

a.) a = r + 5π

b.) a = πr + 2.5πr

c.) a = πr^2 + 6.25π

d.) a = πr^2 + 5πr + 6.25π

(π = pi)

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.