Triangle ABC is similar to triangle DEF . The length of BC¯¯¯¯¯ is 21 cm. The length of DE¯¯¯¯¯ is 10 cm. The length of EF¯¯¯¯¯ is 14 cm. What is the length of AB¯¯¯¯¯?

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asked Aug 22, 2018 4.2k views

3 votes

Triangle ABC is similar to triangle DEF . The length of BC¯¯¯¯¯ is 21 cm. The length of DE¯¯¯¯¯ is 10 cm. The length of EF¯¯¯¯¯ is 14 cm.

What is the length of AB¯¯¯¯¯?

Mathematics
high-school

Tgikal asked

by Tgikal

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1 Answer

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Set up a proportion x/21 = 10/14
Cross multiply
14x = 210
Divide both sides by 14
x = 15

Dinesh Goel answered Aug 27, 2018

by Dinesh Goel

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