AMC 8 Daily Practice Round 7

Complete problem set with solutions and individual problem pages

Problem 1 Easy

The following figure is a side view of a staircase. It is known that each step is 30 cm wide and 20 cm high. What is the perimeter of the side of this staircase in meters?

  • A.

    4

  • B.

    8

  • C.

    16

  • D.

    400

  • E.

    800

Answer:B

Through translation, it can be known that the length BC of the staircase in the figure is 30 \times 8 = 240 cm, and the height AB of the staircase is 20 \times 8 = 160 cm.

Therefore, the perimeter of the side of the staircase is 240 + 160 + (30 + 20) \times 8 = 800 \text{ cm}.

Note the unit conversion: 800 \text{ cm} = 8 \text{ m}.

Thus, the final answer is \boxed{8}m .

Related Problems
Problem 2 AMC 8 Daily Practice Round 7
Problem 3 AMC 8 Daily Practice Round 7
Problem 4 AMC 8 Daily Practice Round 7
Problem 5 AMC 8 Daily Practice Round 7
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