Find the length of the hypotenuse of a right triangle if a = 3 and b = 4. Use: a2 + b2 = c2

5

Square root of 7

25

7

Question

Find the length of the hypotenuse of a right triangle if a = 3 and b = 4. Use: a2 + b2 = c2
 
5

        
Square root of 7

        
25

        
7

johnweldon1993 · Answer

Right, so you have 3 sides of the triangle....

a = one side
b = another side
c = the hypotenuse (longest side)

if you have 2 sides of the triangle and want to solve for the other...you can use that equation

a² + b² = c²

so you can plug in 3 for 'a'
                             4 for 'b'

and solve for c

3² + 4² = c²

so to solve for c

$$c = \sqrt{3^2 + 4^2}$$

anonymous · Answer

25?

anonymous · Answer

@johnweldon1993

johnweldon1993 · Answer

√25 now

johnweldon1993 · Answer

what you had so far was 3² + 4²   ...that does = 25

now you do the square root of that 25....

anonymous · Answer

Thanks.... Could you help me with a couple more?
@johnweldon1993

johnweldon1993 · Answer

if I can then yes :)

anonymous · Answer

Would the square root of 5 be 5?

johnweldon1993 · Answer

the square root of 25 is 5...

the square root of 5 is NOT 5

anonymous · Answer

Your confusing me...

anonymous · Answer

@johnweldon1993

johnweldon1993 · Answer

This is still on that first question correct?

anonymous · Answer

Yeah... So the answer is 5 not 25?

johnweldon1993 · Answer

The answer is 5 yes

anonymous · Answer

@johnweldon1993

johnweldon1993 · Answer

$$c = \sqrt{3^2 + 4^2}$$

$$c = \sqrt{9 + 16}$$

$$c = \sqrt{25}$$

$$\sqrt{25} = 5$$

better?