Find the area of the region under the graph of f on [a, b].
f(x) = x2 − 6x + 12; [−1, 2]

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.

the answer is b.

surface area: 169π

volume: 366π

i got it down.