Answer:
I think it's 20
Step-by-step explanation:
10x4÷2 because vase times height,the divide by 1/2 which it 2 so answer is 20
I think it's 3.8%
answer of second question 12x-6 =6(2x-1)
12x-6
= 6(2x-1) take the common
=Answer=6(2x-1)