MCQ
$176$ સે.મી. પરિમિતિવાળા લંબચોરસનું મહત્તમ ક્ષેત્રફળ .......... $sq. cms.$
- ✓$1936$
- B$1854$
- C$2110$
- Dએકપણ નહિ
$\therefore$ Area $= A = x (88- x )=88 x - x ^2$
nor for area to be maximum, $\left(\frac{d A}{d x}\right)=0$
$88-2 x=0$
or $x=88 / 2=44$
$\therefore$ maximum area $= x (88- x )=44(88-44)=44^2=1936$ sq unit
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