What is the standered form of the number shown in the calculator display? 3.82e+7

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k