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Nadya [2.5K]
3 years ago
10

Anya is creating a triangle using three straws. The two shorter straws have lengths of 20 cm and 21 cm. How long in centimeters

should the third straw be for anja to create a right triangle
Mathematics
1 answer:
Lerok [7]3 years ago
6 0
The hypotunuse should be; 29cm
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Step-by-step explanation:

I assume the formula you’re working with is A=b*h since nothing says otherwise...

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So you have your area (147) and your base (15 3/4), now you need to plug them in, which should look like this:

147= 15 3/4*h

You need to isolate your h in order to get the missing number, so you should divide both sides by 15 3/4 OR 63/4 ((15*3—>60+3=63))

Dividing by a fraction is the equivalent of multiplying by its reciprocal... so

147 * 4/63 = 588/63 which can be simplified to 84/9 once both the numerator and denominator are divided by 7

In mixed number for it is 9 3/9 which simplified becomes 9 1/3

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