Page 237 - C:\Users\azizu\Documents\Flip PDF Professional\Matematics-Form-1-1\

10.1 Perimeter

LEARNING
How do you determine the perimeter? STANDARDS
Determine the perimeter
Perimeter is the total length around an enclosed area. For of various shapes when
example, we can determine the perimeter of various shapes the side lengths are
of swimming pools by finding the total length of all the sides given or need to
of the swimming pool. be measured.

How do you measure
the length of a curved
swimming pool in
Photo (b)?

Photo (a) Photo (b)

1

Determine the perimeter of each of the following shapes.
(a) R 4 cm S (b) F E
3 cm 3 cm 5 cm
P U
Q T G D
9 cm
9 cm

W V A 6 cm B 4 cm C

(a) Perimeter = PQ + QR + RS + ST + TU + UV + VW + WP VW = PQ + RS + TU
= 4 + 4 + 4
CHAPTER
10 = 4 + 3 + 4 + 3 + 4 + 9 + 12 + 9 = 12 cm
= 48 cm
(b) Perimeter = AB + BC + CD + DE + EF + FA CD = AF – GE
= 6 + 4 + 6 + 5 + 6 + 9 = 9 – 3
= 6 cm
= 36 cm

2
Measure the perimeter of the object in the diagram below.

226
Chapter 10

10 TB Math F1.indd 226 11/10/16 12:19 PM