Full View
DSSSB PRT 2022 Afternoon 📅 23 Mar, 2022

Sum of radius and diameter of a circle is 84 cm. Circumference?

A
176 cm
B
84 cm
C
168 cm
D
88 cm
Result Summary
Logo

APEDIA

DSSSB PRT
2022 • 23 Mar, 2022 • Afternoon
Sum of radius and diameter of a circle is 84 cm. Circumference?
Correct Answer
176 cm
• Eq: r + 2r = 84 -> 3r = 84 -> r = 28. • Circ: 2πr = 2 × (22/7) × 28 = 44 × 4 = 176....
💡 Analysis & Explanation
• Eq
r + 2r = 84 -> 3r = 84 -> r = 28.
• Circ
2πr = 2 × (22/7) × 28 = 44 × 4 = 176.