AMC 8 L2: Basic Geometry

Complete problem set with solutions and individual problem pages

Problem 9 Easy

The twelve-sided figure shown has been drawn on 1\text{cm}\times 1\text{cm} graph paper. What is the area of the figure in \text{c}{{\text{m}}^{2}}? (2018 AMC8 Problem, Question #4)

  • A.

    12

  • B.

    12.5

  • C.

    13

  • D.

    13.5

  • E.

    14

Answer:C

We count 3\times3=9 unit squares in the middle, and 4 small triangles each with an area of 1. Thus the answer is 9+4=13.