Question square
Square A has side lengths that are times the side lengths of square B. The area of square A is times the area of square B. What is the value of ?
Square A has side lengths that are 166 times the side lengths of square B. The
Hard-difficulty · SAT Math · Ratios, Rates, and Proportional Relationships — Scale factors in geometry. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
The correct answer is . The area of a square is , where is the side length of the square. Let represent the length of each side of square B. Substituting for in yields . It follows that the area of square B is . It’s given that square A has side lengths that are times the side lengths of square B. Since represents the length of each side of square B, the length of each side of square A can be represented by the expression . It follows that the area of square A is , or . It’s given that the area of square A is times the area of square B. Since the area of square A is equal to , and the area of square B is equal to , an equation representing the given statement is . Since represents the length of each side of square B, the value of must be positive. Therefore, the value of is also positive, so it does not equal . Dividing by on both sides of the equation yields . Therefore, the value of is .
More Ratios, Rates, and Proportional Relationships practice questions
- State Power capacity Low Medium High Total Texas 4 2 3 9 California 1
- Species of tree Growth factor Red maple 4.5 River birch 3.5 Cottonwood 2.0 Black
- For a person m miles from a flash of lightning, the length of the
- Jennifer bought a box of Crunchy Grain cereal. The nutrition facts on the box
- The density of a certain type of wood is 353 kilograms per cubic meter.
- Square X has a side length of 12 centimeters. The perimeter of square Y
- If x y = 4 and 24 x n y = 4 , what
- On April 18, 1775, Paul Revere set off on his midnight ride from Charlestown
Browse all Problem-Solving and Data Analysis practice questions or return to the full SAT question bank.
