E.10

축척과 둘레·넓이의 변화

축척(닮음비)이 k이면 길이와 둘레는 k배, 넓이는 k²배

난이도
보통
문제 수
Daniel Math Academy · Grade 7 Math

Perimeter & Area in Scale Drawings

Skill E.10 · Ratios & proportions · ★★☆ Medium

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Answer each question.

Example

Think: Both the length and the width are 3 times as long, so the area is times as large.

  1. 1
    A trapezoid has a area of ft². A scale drawing of it uses a scale factor of . What is the area of the drawing?
  2. 2
    A triangle has a area of m². A scale drawing of it uses a scale factor of . What is the area of the drawing?
  3. 3
    A triangle has a area of m². A scale drawing of it uses a scale factor of . What is the area of the drawing?
  4. 4
    A trapezoid has a area of cm². A scale drawing of it uses a scale factor of . What is the area of the drawing?
Daniel Math Academy · danielmath.comWorksheet #uvhi2ww · Page 1 / 2
Daniel Math Academy · Grade 7 Math

Answer Key

E.10 Perimeter & Area in Scale Drawings · ★★☆ Medium

  1. 1 ft²
  2. 2 m²
  3. 3 m²
  4. 4 cm²
Daniel Math Academy · danielmath.comWorksheet #uvhi2ww · Answer Key · Page 2 / 2