Question 6:
Diagram below shows a right pyramid with a square base.
Calculate the total surface area, in cm2, of the right pyramid.
Solution:
h2= 102 – 62
= 100 – 36
= 64
h = √64
= 8cm
Total surface area of the right pyramid
= (12 × 12) + 4 × (½× 12 × 8)
= 144 + 192
= 336 cm2
Question 7:
Diagram below shows a prism.
Draw to full scale, the net of the prism on the grid in the answer space. The grid has equal squares with sides of 1 unit.
Solution:
Diagram below shows a prism.
Draw to full scale, the net of the prism on the grid in the answer space. The grid has equal squares with sides of 1 unit.
Solution: