How many cubes with sides lengths of 1/2cm does it take to fill the square prism 1cm 2cm 3/2cm

Answerencourage alternative timber sources,increase public awareness of the forests,increase research into forestry,involve local communities in forest projectsalso one of the main initiatives of the 1977 act was to introduce a new approach to forest management known as selective management system, this is recognised as one of the most sustainable approaches to tropical forestry management in the world

Ithink the answer is d.