Which of these scales are equivalent to 3 cm to 4 km?

a. 0.75 cm to 1 km
b. 1 cm to 12 km
c. 6 mm to 2 km
d. 0.3 mm to 40 m
e. 1 inch to 7.62 km

These question are hard can you me with answers

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?