Answer:
7.2 cm
Step-by-step explanation
The area of a rectangle is calculated by multiplying the width and the length together. Therefore:
13 multiplied by x = 93.6
x = 93.6 divided by 13
x= 7.2
<span>1/r + 2/1-r = 4/r^2
1-r+2r/r(1-r)=4/r^2
(1+r)/r(1-r)=4/r^2 cancle r both side
1+r/1-r=4/r
cross multiply
r+r^2=4-4r
r^2+4r+r-4=0
r^2+5r-4=0
r^2+4r+r-4=0
solve it for r factor it...
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