Widescreen monitor

Computer business hit by a wave of widescreen monitors and televisions. Calculate the area of ​​the LCD monitor with a diagonal size 20 inches at ratio 4:3 and then 16:9 aspect ratio.

Is buying widescreen monitors with same diagonal more advantageous than buying 4:3 monitor?

Correct result:

S1 =  1238.7072 cm2
S2 =  1102.7067 cm2


1 inch2=(2.54 cm)2=6.4516 cm2 k1=2.542=6.4516 u=20 inch b1=u/(4/3)2+1=20/(4/3)2+1=12 a1=4/3 b1=4/3 12=16 S1=a1 b1 k1=16 12 6.4516=1238.7072 cm2
b2=u/(16/9)2+1=20/(16/9)2+19.8052 a2=16/9 b2=16/9 9.805217.4315 S2=a2 b2 k1=17.4315 9.8052 6.45161102.7067=1102.7067 cm2 S2<S1

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