Sally travels to work each day. she travels 12 km east from home to main road. sally then travels 9 km north on the main road to work. if the council was to put a direct road from sally's house to work, how much shorter would her journey be?

a. 6 km

b. 7.94 km

c. 11.06 km

d. 15 km

Question

Mathematics

Kristin Whitaker

14 February, 13:30

Sally travels to work each day. she travels 12 km east from home to main road. sally then travels 9 km north on the main road to work. if the council was to put a direct road from sally's house to work, how much shorter would her journey be?

a. 6 km

b. 7.94 km

c. 11.06 km

d. 15 km

+5

Answers (1)

Know the Answer?

Melody Curtis · Answer 1

This way Sally travels 12+9=21 kilometers.

If there was a direct way she could go to work, that way would have been 15 km (because her way to work forms a right-angled triangle).

Therefore her journey would be 21-15=6 km shorter. Choice A.

Sally travels to work each day. she travels 12 km east from home to main road. sally then travels 9 km north on the main road to work. if the council was to put a direct road from sally's house to work, how much shorter would her journey be?a. 6 kmb. 7.94 kmc. 11.06 kmd. 15 km

Sally travels to work each day. she travels 12 km east from home to main road. sally then travels 9 km north on the main road to work. if the council was to put a direct road from sally's house to work, how much shorter would her journey be?

a. 6 km

b. 7.94 km

c. 11.06 km

d. 15 km