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Mathematics 15 Online
OpenStudy (anonymous):

If the area of triangle ABC is 240 cm2, the area of triangle BDE is _____ cm2.

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

The ratio of the lengths of the smaller triangle to the larger triangle is 1:2 So the ratio of the areas is 1:4 This means that the larger area is 4 times larger

jimthompson5910 (jim_thompson5910):

So the smaller triangle is 4 times smaller and its area is 240/4 = 60 square cm

OpenStudy (anonymous):

thanks so much!

jimthompson5910 (jim_thompson5910):

sure thing

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