2025 MGS(S) PRELIMS P1 Q9

2025 MGS(S) PRELIMS P1 Q9

Secondary 4
3 marks

P and Q are similar pentagonal pyramids. The ratio of their surface areas, P:Q, is (81:121).

  1. Find the ratio of the height of pyramid P to that of pyramid Q.[1]
  2. Both pyramids are completely filled with sand. Find the mass of sand, in kg, in pyramid Q if the mass of sand in pyramid P is 192 g.[2]

Solution:

Solution locked

Sign in to view the step-by-step solution

Similar questions are unavailable for this question.
Answer:(a) \(9:11\) (b) \(0.351\text{ kg}\)

Need help? Join our JC Math tuition classes.

Learn more