2007-11-28 10:46:52 · 4 answers · asked by Mykel D 1 in Science & Mathematics ➔ Mathematics
P=2B+2H; B=(2/3)H
Substitution!
P=(4/3)H+2H=(10/3)H
H= (3/10)P
H=(3/10)70
H=21
B=(2/3)21
B=14
A=BH=14*21=294
2007-11-28 10:54:07 · answer #1 · answered by someone2841 3 · 0⤊ 0⤋
Well, let the height be X and the base be 2/3x.
70 = 2x + (1+1/3)x
70 = (3 + 1/3)x
x = 21
So the height is 21 and that means the base would be 14.
To get the area, multiply these two together and you'll get 294 inches squared.
2007-11-28 18:53:53 · answer #2 · answered by รզlεսռց ☆ 6 · 0⤊ 0⤋
h+h+2/3h+2/3h=70
3 1/3 h = 70
10/3h=70
h=21
base= (2/3)21=14
area=21*14=294
2007-11-28 18:50:54 · answer #3 · answered by RickSus R 5 · 2⤊ 0⤋
y=2/3x
2y+2x=70
y= base
x=height
x times y= area
2007-11-28 18:50:54 · answer #4 · answered by Abira 4 · 0⤊ 0⤋