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5 votes
Find the value of a.
Picture below

Find the value of a. Picture below-example-1

2 Answers

5 votes
The answer is A=58 i think
User Peater
by
8.1k points
1 vote

Use the Pythagoream theorem. Note that 20 is the longest side, and is c

a² = c² - b²

c = 20, b = 12, a = a

Plug in corresponding numbers to corresponding variables

a² = (20)² - (12)²

Simplify

a² = 400 - 144

Simplify. Combine like terms

a² = 256

Isolate the a. Root both sides

√a² = √256

a = √256

a = 16

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16 is your answer for a

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hope this helps

User Wintvelt
by
7.9k points

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