Grade 11 Maths Revision Chapter 3 & 4a,b,c

• x = 18

• x = 15

• x = 20

• x = 2

• 10

• 15

• 16

• 6

A chocolate bar is made in the shape of a triangular prism. Each end is an equilateral triangle of side length 3 centimetres. The area of a triangular end of this chocolate bar is closest to:

A grassed region in the athletics ground is shown shaded

in the diagram below. The perimeter of the grassed region

comprises two parallel lines, BA and CD, each 100 m in

length, and two semi-circles, BC and AD. In total, the perimeter of the grassed region is 400 m.

Determine the area of the grassed region to the nearest square metre.