If the dimensions of a rectangular parallelepiped are 10 cm, 7 cm and 4 cm, then its lateral surface area is:
यदि एक आयताकार समांतर (Parallel) षट्फलक की विमाएँ 10 cm, 7 cm और 4 cm हैं, तो इसका पार्श्व पृष्ठीय क्षेत्रफल (Lateral surface area) है:
Answer और ExplanationAnswer and explanation
Answer: (C) 136 cm²
l = 10 cm, b = 7 cm और h = 4 cm लो।
LSA (चारों दीवारें) = 2(l + b) × h = 2 × 17 × 4 = 136 cm²
✓
पार्श्व पृष्ठीय क्षेत्रफल (Lateral surface area) 136 cm² है।
Take l = 10 cm, b = 7 cm and h = 4 cm.
LSA (four walls) = 2(l + b) × h = 2 × 17 × 4 = 136 cm²
✓
The lateral surface area is 136 cm².
Source: Selection Post Phase XIV (10th) · 21 Sep 2026 · Shift 3। Solution: Prashant Sir, Vijayastra।Source: Selection Post Phase XIV (10th) · 21 Sep 2026 · Shift 3. Solution by Prashant Sir, from Vijayastra.