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15 votes
15 votes
Please explain, I don't know how to solve.​

Please explain, I don't know how to solve.​-example-1
User Ashwel
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3.0k points

1 Answer

8 votes
8 votes

it's base× height (same as a rectangle:

4×5=20

the triangle, 3, and right angle are there just to confuse you :)

User Samuele Catuzzi
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2.7k points