A photograph

A photograph will stick to a white square letter with an x cm length. The photo is 3/4 x cm long and 20 cm wide than the width of the paper. The surface of the remaining paper surrounding the photograph is 990 cm2. Find the size of the paper and the photo.

Correct answer:

a =  39.8458 cm
b =  29.8843 cm
c =  20 cm

Step-by-step explanation:

S1 = a2 b = 3/4   a c = 20 S2 = b c S1S2 = 990  cm2  a23/4 a 20=990  a23/4 a 20=990 a215a990=0  p=1;q=15;r=990 D=q24pr=15241(990)=4185 D>0  a1,2=2pq±D=215±4185=215±3465 a1,2=7.5±32.345788 a1=39.845787979 a2=24.845787979  a=a1=39.8458=39.8458 cm

Our quadratic equation calculator calculates it.

b=3/4 a=3/4 39.8458=29.8843 cm
c=20=20 cm  S1=a2=39.845821587.6868 cm2 S2=b c=29.8843 20597.6868 cm2

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: