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ΔPQR ≅ ΔXYZ and PQ = 5.6 cm and XY = 8.4 cm. If perimeter of ΔXYZ = 24 cm, what will be the perimeter of ΔPQR?
  • a)
    36 cm
  • b)
    16 cm
  • c)
    12 cm
  • d)
    18 cm
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
ΔPQR ≅ ΔXYZ and PQ = 5.6 cm and XY = 8.4 cm. If perim...
According to problem,

⇒ Perimeter of ΔPQR = 24 × 5.6/8.4
⇒ Perimeter of ΔPQR = 16
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Most Upvoted Answer
ΔPQR ≅ ΔXYZ and PQ = 5.6 cm and XY = 8.4 cm. If perim...
Understanding Congruent Triangles
When two triangles are congruent, they have the same shape and size. Therefore, corresponding sides are proportional.
Given Information
- Triangles: ΔPQR and ΔXYZ are congruent.
- Lengths of sides: PQ = 5.6 cm and XY = 8.4 cm.
- Perimeter of ΔXYZ: 24 cm.
Finding the Ratio of Corresponding Sides
To find the perimeter of ΔPQR, we first need to determine the ratio of the corresponding sides:
- Ratio of sides:
Ratio = PQ / XY = 5.6 cm / 8.4 cm.
To simplify this ratio:
- Convert both to a common unit or decimal:
- 5.6 / 8.4 = 2 / 3.
Calculating the Perimeter of ΔPQR
If the ratio of sides is 2:3, this means that for every 2 units of ΔPQR, there are 3 units in ΔXYZ.
Now, since the perimeter of ΔXYZ is 24 cm:
- Let the perimeter of ΔPQR be denoted as PQR_perimeter.
Using the ratio:
- PQR_perimeter / 24 cm = 2 / 3.
Finding the Value of PQR_perimeter
Now, we can solve for PQR_perimeter:
- PQR_perimeter = 24 cm * (2/3) = 16 cm.
Conclusion
Thus, the perimeter of ΔPQR is 16 cm.
The correct answer is option 'B'.
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ΔPQR ≅ ΔXYZ and PQ = 5.6 cm and XY = 8.4 cm. If perimeter of ΔXYZ = 24 cm, what will be the perimeter of ΔPQR?a)36 cmb)16 cmc)12 cmd)18 cmCorrect answer is option 'B'. Can you explain this answer?
Question Description
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