$1.48 is the exact answer
A fraction is a numerical quantity that is not a whole number.What you probably need to relearn is equivalent fractions, Least common denominator and how to multiply and divide fractions.
∠PXS = (180 - 106) ÷ 2 // isosceles triangle
∠PXS = 37°
∠XQR = 180 - 106 //parallelogram
∠XQR = 74°
∠RXQ = 74° //Isosceles triangle
∠SXR = 180 - 37 - 74 // Adjacent angles on a straight line
∠SXR = 69°
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Answer: ∠SXR = 69°
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Below is the solution:
A(final)=16cm^2 ds/dT=6 da/dT=?
<span>A=(s)^2 A=16cm^2 , s=sqrt(A) , s=sqrt(16) , s=4cm </span>
<span>da/dT=2(s)(6cm/sec) , da/dT=12cm/sec(s) , da/dT=12cm/sec (4cm)
</span>
<span>Answer should be da/dT=48cm^2/sec
</span>
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