17. Myrna runs at a pace of 9 km/hr. If she runs for a period of 3 hours, how far has
she travelled?
A. 24 km
B. 25 km
C. 26 km
D. 27 km
18. Calculate the speed of a car that travels 50 km in half an hour.
A. 50km/hr
C. 100km/hr
B. 25km/hr
D. 200km/hr
19. The sum of areas of all faces of a solid figure is called
A. circumference
C. surface area
B. perimeter
D. volume
20. The unit for surface area is
A. cubic unit
B. linear unit
C. square unit
D. weight unit​