Triangles and are similar with cm corresponding to cm. The area of is . What is the area of ?

Answer and explanation

Correct answer: B.

  1. Step 1: Length scale factor .
  2. Step 2: Area scale factor .
  3. Step 3: Area of .
Answer
.
Why not the others: : scales the area by the length ratio only. : scales the area by the cube of the length ratio. : multiplies by instead of .

Practise more Geometry.

Free questions with an explanation for every one, and full timed ESAT (Engineering and Science Admissions Test) mock tests.