The area of the triangle shown is 40.0 cm?. ?
12.5 cm
What is the height of the triangle?
O A. 3.20 cm
O B. 6.40 cm
O C. 13.8 cm
O D. 27.5 cm

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is