Why is two times three

do you mean 2 × 3 its 6 becuses 3 pluses 3 is 6

6

Step-by-step explanation:

What is 2x3?

This means that there is 2 groups of 3 or 3 groups of 2

2+2+2=6

3+3=6

210 grams

Step-by-step explanation:

Given,

One cube= 5 grams of paint

According to question,

There are= (9*2)+(6*4) cubes

               = 18+24 cubes

                =42 cubes

Total paint needed= 5*42 grams

                               =210 grams(answer)