Semester 1 Review

The distance from New York to Hong Kong is 14632 km. Write this number to 3 s.f.

(Exercise 1a)

• 146

• 14632

• 14600

• 15000

The distance from New York to Hong Kong is 14632 km. Write this number to the nearest 1000.

(Exercise 1b)

• 14600

• 10000

• 14000

• 15000

The distance from New York to Hong Kong is 14632 km. Write this number in standard form.

(Exercise 1F)

• $1.46\ \times\ 10^4$

• $146\ \times\ \ 10^2$

• $1.4632\ \times\ 10^4$

• $1.5\ \times\ 10^4$

George estimates his height to be 162 cm. Find the upper and lower limits of his measurements

(Exercise 1C)

• $161.5\ cm\ \le\ height\ \le162.5\ cm$

• $161.5\ cm\ \le\ height\ <162.5\ cm$

• Lower Limit = 161 cm
  Upper Limit = 163 cm

George estimates his height to be 162 cm. If his exact height is 163.5 cm, find the percentage error.

(Exercise 1D, 1F)

• 0.615%

• 0.612%

• 1.22%

• 1.24%

AB = 30m, PA = PB = 25m

Find the height

(Exercise 1G, 1H)

• 20 m

• 16.6 m

• 3.16 m

• 2.24 m

AB = 30m, PA = PB = 25m

Find the base angle

(Exercise 1I)

• 36.9

• 31.0

• 53.1

• 35.6

AB = 30m, PA = PB = 25m

Find the missing angle APB

(Exercise 1I)

• 106.3

• 53.1

• 36.9

• 73.7

The angle of elevation from Ella to the top of a lighthouse is 5 degrees. If the lighthouse is 12 m tall, how far is Ella from the lighthouse?  (Exercise 1I)

• 137.161 m

• 137 m

• 6.56 m

• 138 m

Find the area of the sector (Exercise 1J, 2D)

• $2.356\ cm^3$

• $2.356\ cm^2$

• $2.36\ cm^3$

• $2.36\ cm^2$