10
Answer: DSet 4: Triangles
Explanation
Leo's triangular garden has two sides of 17 yards and 21 yards. The total border length is 48 yards. How long is the remaining side?
A.
6
B.
5
C.
20
D.✓ Correct
10
Detailed Explanation
Choice D is correct. The perimeter of a triangle is the sum of all three sides. 1. Total perimeter: 48 yards Two known sides: 17 + 21 = 38 yards Third side: 48 - 38 = 10 yards Therefore, the third side is 10 yards.
Key Steps:
•
The correct answer is 10
Why others are wrong:
A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.
B: This would give an incorrect result. Choice B is incorrect and may result from a calculation error.
C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.
🎉 Set Complete!
You've reviewed all explanations. Ready to try another set?
🎯 Keep Practicing!
Master all sections for your best SAT score