Home › Kerala SSLC (Class 10) › mathematics › Pyramids › For the pyramid in the previous question (base e…
For the pyramid in the previous question (base edge 10 cm, lateral edge 13 cm), the total surface area equals:
Answer & Solution
Correct answer: A.
1. Base area = 10² = 100 cm².
2. Slant height (from previous question) = 12 cm.
3. Each triangular face has area (1/2)(10)(12) = 60 cm².
4. Four faces give 4 × 60 = 240 cm².
5. Total surface area = 100 + 240 = 340 cm².
_Source: SCERT Kerala Std X Mathematics Part-2, Chapter 7-8 (pp 180-199, 2019 ed.)._
Related questions
In any square pyramid, which of the following squared quantities are in arithmetic progresThe Great Pyramid of Giza in Egypt has a roughly square base with side close to half a lakAll edges of a square pyramid are 18 cm (base edges and lateral edges both 18 cm). Its slaTwo square pyramids have equal volumes. The base edge of one is half the base edge of the A metal cube of edge 15 cm is melted and recast into a square pyramid with base edge 25 cmThe volume of a square pyramid of base edge 10 cm and vertical height 8 cm equals:Continuing the tent problem (base 6 m, height 4 m, slant height 5 m), the area of canvas nA tent in the shape of a square pyramid has base edges 6 m and vertical height 4 m. The sl