<em><u>ANSWER:</u></em>
<u>A </u><u>=</u><u> </u><u>1</u><u>5</u><u>3</u><u>.</u><u>9</u><u>4</u><u>c</u><u>m</u><u>²</u>
<em><u>EXPLANATION:</u></em>
<em><u></u></em>
Answer:
5
Step-by-step explanation:
12+12+12= 36
36-7= 29
3+3+3=9
29-9=20
20÷4=5
I think it's 10 or 10.5 not sure