You don't do it it is impossible to do
Answer:
bottom: 12 x 12 = 144
1st triangle: (12 x 8)/2 = 48
2nd triangle: 48
3rd triangle: 48
4th triangle: 48
144 + 48 + 48 + 48 + 48 = <u>336 cm squared</u>
5×60 minutes =300 minutes
300+15 minutes or 1/4hr
315 minutes each week
15+60+30+45+15+45=210 minutes
300-210= 90 minutes
If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down (no change).
15<u>7</u> ≈ 160