Fill in the missing information for the following trapezoids:
height = ________
b1 = 20 cm
b2 = 21 cm
area = 205 cm2
A 17.06 cm
B 12.5 sq cm
C 26 cm
D 10 cm
E 28.9 cm
F 50 cm^2
2007-10-18 05:40:10 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
H = 2A/(b1 + b2)
...= 410/41
...= 10
2007-10-18 05:43:59 · answer #1 · answered by gebobs 6 · 1⤊ 0⤋
D 10 cm
2007-10-18 12:45:03 · answer #2 · answered by California Conservative 1 · 1⤊ 0⤋
Area = (b1+b2)*h/2 so h = 410/41=10
D 10 cm is the right answer.
2007-10-18 12:47:48 · answer #3 · answered by mulla sadra 3 · 0⤊ 0⤋
Try dividing the area by the average of b1 and b2.
2007-10-18 12:44:07 · answer #4 · answered by David F 7 · 0⤊ 0⤋
area= (b1+b2)/2*h
205 = (20+21)/2*h
205 = 20.5*h
205/20.5 = h
10=h
the answer is D
2007-10-18 12:47:05 · answer #5 · answered by Siva 5 · 0⤊ 0⤋
throw a dice! lols.
2007-10-18 12:47:36 · answer #6 · answered by G'night, Love 2 · 0⤊ 0⤋
B
2007-10-18 12:43:45 · answer #7 · answered by Anonymous · 0⤊ 1⤋