Answer:
A=1/2 B x H
207=1/2 B x 18
B=207/18 x 2
B= 23 inches
sorry i dont know, i just rlly need points
Step-by-step explanation:
3- 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
4- 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
7- 7, 14, 21, 28, 35, 42, 49, 56, 63, 70
HOPE IT HELPED