jemarcus1999 jemarcus1999

10-02-2017
Mathematics

contestada

A triangle has an area of 30 cm². The base and height are scaled by a factor of 3.

What is the area of the resulting triangle?

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HomertheGenius HomertheGenius

16-02-2017

Area of a triangle:
A = a * h / 2
where a is the base and h is the height.
For a new triangle:
A ( new ) = 3 a * 3 h / 2 = 9 * a * h / 2 = 9 A
A ( new ) = 9 * 30 = 270 cm²
Answer: The area of resulting triangle is 270 cm² .

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