Painting the house

This task is about calculating the area of a space to be painted and the length of time it will take to paint.
a)
Lesali has a garage with a flat roof that she wants to paint. The garage is 6 metres long and 6 metres wide.
What is the area of the garage roof?
 

(A)   6 square metres
(B)  12 square metres
(C)  24 square metres
(D)  36 square metres
(E)  None of these. The area of the roof is ___________ square metres. 
 

b)

Lesali has an area of 120 square metres to paint.

If she paints 8 square metres every hour, how many hours will it take Lesali to paint the area?

 

(A)   8 hours
(B)  15 hours
(C)  112 hours
(D)  128 hours
(E)   None of these. Leslie will take ___________ hours.