I need help on that to. We have a test tomorrow and I can't figure it out and I need help:(
Answer:
78 cm²
Step-by-step explanation:
since all sides are congruent you multiply the one measurement 6 times,so you do 13 × 6 equals 78
Make 37.5% into decimal form : Since it is being marked up, add 100% = 1.375
1.375 x 80
1.375
x 80
_________
0000
+11000
_________
110.000
80 marked up by 37.5% is 110.
50-10 = 40. 40 divided by 6 = around 6/7. So about 6/7 weeks