2007-02-26 10:23:44 · 4 answers · asked by cubanita19892000 1 in Education & Reference ➔ Homework Help
Since area = base times height divided by 2, multiply 63 by 2 to find out what base times height was. Then divide that by the known height to get the base.
2007-02-26 10:30:53 · answer #1 · answered by hayharbr 7 · 0⤊ 1⤋
A = 1/2 * b * h ( formula for the area of a triangle)
height = 18 ; Area = 63 ; b = base
63 = 1/2 * b * 18
63 = 9 * b ( I multiplied 1/2 * 18)
63 / 9 = b ( I divided both sides by 9
7 = b
2007-02-26 10:29:40 · answer #2 · answered by Xilef 2 · 1⤊ 0⤋
area of a triangle = 1/2 base x height... thus
63sq in=1/2 b x 18
63/18=b/2
63x2
_____=b
18
126/18=b
7=b
2007-02-26 10:31:11 · answer #3 · answered by some_old_spanish_minor_in_school 2 · 1⤊ 0⤋
the formula is Area=1/2base * height
soo...
63 inches squared = 1/2b * 18
divide by 18, then 1/2
7 inches is your base
2007-02-26 10:40:18 · answer #4 · answered by dreamer 2 · 0⤊ 0⤋