What is the value of x? (x + 40) (3x) O20 o 35 O 60 70
1 answer:
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Answer:
2 x
Step-by-step explanation:
The diagonal divides the square into 2 right angles with legs s and hypotenuse x
Using Pythagoras' identity on one of the right triangles, then
s² + s² = x²
2s² = x² ( divide both sides by 2 )
s² = ( take the square root of both sides )
s = =
Thus
perimeter = 4s = 4 × =
Multiply numerator/ denominator by
perimeter = = 2
x