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DSSSB PRT 2022 Afternoon 📅 23 Mar, 2022

Rhombus D1=60, D2=56. Area = Area of Rectangle (L=B+2). Perimeter of Rectangle?

A
82 cm
B
160 cm
C
80 cm
D
164 cm
Result Summary
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DSSSB PRT
2022 • 23 Mar, 2022 • Afternoon
Rhombus D1=60, D2=56. Area = Area of Rectangle (L=B+2). Perimeter of Rectangle?
Correct Answer
164 cm
• Rhombus Area: 0.5 × 60 × 56 = 1680. • Rectangle: L×B = B(B+2) = 1680. B² + 2B - 1680 = 0. • Solve: (B+42)(B-40)=0. B=40. L=42. • Perimeter: 2(L......
Ref/Book : DSSSB PRT 2022
Ref. Subject Maths
Chapter -
Ref. Topic Mensuration
Pg. No -
💡 Analysis & Explanation
• Rhombus Area ▼
0.5 × 60 × 56 = 1680.
• Rectangle ▼
L×B = B(B+2) = 1680. B² + 2B - 1680 = 0.
• Solve ▼
(B+42)(B-40)=0. B=40. L=42.
• Perimeter ▼
2(L+B) = 2(82) = 164.
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