Post-UTME Mathematics 2011 Objective — Question 6
Question 6 of 11 from the Post-UTME Screening (Post-UTME) Mathematics 2011 Objective paper, with the correct answer and a full explanation.
Advertisement
The base of a pyramid is a square of side 8cm. If its vertex is directly above the centre, find the height given that the edge is 4*sqrt(3)cm.
- A. 6cm
- B. 5cm
- C. 4cmCorrect
- D. 3cm
Explanation
Half-diagonal of the base = 4*sqrt(2). Height^2 = edge^2 - half-diagonal^2 = 48-32 = 16, so height = 4cm.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.