show and or tell formula thanks
2007-03-26 12:42:07 · 17 answers · asked by Anonymous in Education & Reference ➔ Homework Help
A=1/2bh
2A=bh
2A/h=b
than b=2(72)/12
b=144/12
than b=12
cheers
2007-03-26 12:44:13 · answer #1 · answered by GoAndComeback 1 · 0⤊ 1⤋
the formula to find the area of a triangle is 1/2bxh. So plug in the numbers you do know 1/2bx12=72. First you have to divide both sides by 12. 12/12=1 and anything times 1 = itself right? so 72/12=6 So, now you have1/2b=6 now divide by 1/2. 6/1/2=12
2007-03-26 19:48:09 · answer #2 · answered by zaleonia1 4 · 0⤊ 0⤋
A=1/2(b)(h)
72=1/2(b)(12)
72=6b
72/6=6b/6
b=12
2007-03-26 19:46:27 · answer #3 · answered by xsilentdesperation 1 · 0⤊ 0⤋
12
2007-03-26 19:45:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The formula for area of a triangle is
1/2b*h=a
(one half base times height equals area)
So,
1/2b*12=72
1/2b=72/12
1/2b=6
b=6*2
b=12
2007-03-26 19:47:09 · answer #5 · answered by Jessica LeAnn 3 · 0⤊ 0⤋
the formula for finding the area of a triangle is (base x height)/2 so you have
72= (X x 12)/2
2x72 = X x 12
144 = X x 12
144/12 = X
X = 12
2007-03-26 19:46:25 · answer #6 · answered by keller81 2 · 0⤊ 0⤋
A=1/2*b*h
72=1/2*b*12
144=b*12
12=b
2007-03-26 19:45:28 · answer #7 · answered by WaitingForAnswers 2 · 0⤊ 0⤋
area of a tri= 1/2 b x h= 72
1/2 b x 12 =72
----------------------
12
(1/2 b = 6) x 2
b = 12
2007-03-26 19:48:05 · answer #8 · answered by dream_angel 3 · 0⤊ 0⤋
6
2007-03-26 19:45:31 · answer #9 · answered by nellbellgirl 2 · 0⤊ 1⤋
6
because 72 divided by 12 is 6
2007-03-26 19:45:46 · answer #10 · answered by Anonymous · 0⤊ 1⤋