Answer: volume of box must be 90

Explanation:
Given that:
total no. of candies = 18
width of candy = 2cm
length of candy = 2cm
height of candy = 2cm
solution:
volume of a candy = l×b×h
= 2×2×1
= 5

volume of box = total no. of candies × volume of a candy
= 18 × 5
= 90
