Bunuel wrote:

The pages of a book are 24 centimeters high and 15 centimeters wide. Each page has a margin of 3 centimeters at the top and at the bottom, and a 2-centimeter margin on each side. What is the total area, in square centimeters, occupied by the margins on each page?

(A) 138

(B) 162

(C) 180

(D) 186

(E) 198

Attachment:

margins.png [ 6.63 KiB | Viewed 445 times ]
I segmented off four parts, see diagram.

Top and bottom margins': length = 15, width = 3

Area for top and bottom = 3 * 15 = 45 sq cm each

The left and right margins:

Length of page is 24. Top and bottom margins together are 3 + 3 = 6

Length of page is truncated for left and right margins: length for them is 24 - 6 = 18

Left and right segments' length: 18. Width: 2

Area for left and right segments: (18 * 2) = 36 sq cm each

In square centimeters, total margin area is 45 + 45 + 36 + 36 = 162

Answer B

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