Maths-
General
Easy
Question
Televisions are advertised by the length of their diagonals. If a 42-inch television measures 18 inches high, how wide is the television?
Hint:
Pythagoras' theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named Perpendicular, Base and Hypotenuse. Here, the hypotenuse is the longest side, as it is opposite to the angle 90°.
If a is the perpendicular, b is the base, and c is the hypotenuse, then according to the definition, the Pythagoras Theorem formula is given as
c2= a2 + b2
The correct answer is: the width of the screen is 38 inches
Here, Length of height(h) = 18 inches
Length of hypotenuse(d) = 42 inches
Let’s say that the width of the screen is b
Using Pythagoras theorem
d2 = h2 + b2
422 = 182 + b2
b2 = 422 - 182
d = 
=12 
inches 38 inches
Final Answer:
Hence, the width of the screen is 38 inches.
=12 inches 38 inchesFinal Answer:
Hence, the width of the screen is 38 inches.
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