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January 31, 2015

January 31, 2015

Posted by **RIYA** on Sunday, October 23, 2011 at 7:24am.

- MATH -
**Reiny**, Sunday, October 23, 2011 at 9:18amlet the base be 5x and the height 3x ,

area of triangle = (1/2)base x height

(1/2)(5x)(3x) = 67.5

35x^2 = 135

x^2 = 9

x = √9 = 3

so base is 5x = 15

height is 3x = 9

check:

15 : 9 = 5 : 3

(1/2)(15)(9) = 67.5

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