TV diagonal

Diagonal TV is 0.56 m long, how big the television sreen is if the aspect ratio is 16:9?

Correct result:

a =  48.8082 cm
b =  27.4546 cm

Solution:

d=0.56 m cm=0.56 100  cm=56 cm a:b=16:9 d2=a2+b2  d2=a2+(9/16 a)2 d2=a2+(9/16)2 a2  a2=d21+(9/16)2  a=d1+(9/16)2  a=d 16/162+92=56 16/162+92=48.8082 cm
b=916 a=916 48.8082=27.4546 cm



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Showing 1 comment:
#
Lilymay
why did it have to be divided by the square root of 16 and 9 squared?

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