Sarkari RiseLogin
SSC MTS 2025 · PYQ · Mensuration · medium

The area of an equilateral triangle is 81√3 cm². Find its side and altitude.

  1. A.Side = 9 cm, Altitude = 9√3 cm
  2. B.Side = 18 cm, Altitude = √3 cm
  3. C.Side = 8 cm, Altitude = √3 cm
  4. D.Side = 18 cm, Altitude = 9√3 cm✓ Correct

Explanation

(√3/4)×side² = 81√3 gives side² = 324, so side = 18 cm. Altitude = (√3/2)×18 = 9√3 cm.
💡 Practice unlimited SSC MTS PYQs + AI-tracked progress on each topic. Sign up free →

More Mensuration questions

Want more SSC MTS practice?

Free daily 10-Q quiz · adaptive mocks · 4,000+ verified PYQs · AI doubt solver in Hindi + English

Sign up freeMore Mensuration practice