C-16-Q025: If side of an equilateral triangle is $a$ and area increases by $3\sqr… | প্রশ্ন করি

C-16-Q025mediumsingle_mcq

If side of an equilateral triangle is $a$ and area increases by $3\sqrt{3}$ sq m when each side increases by $1$ m, then $a$ equals —

The increase in area is $\frac{\sqrt{3}}{4}\left[(a+1)^2 - a^2\right] = \frac{\sqrt{3}}{4}(2a+1) = 3\sqrt{3}$ . Solving gives m.

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এই অধ্যায়ের আরও প্রশ্ন

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6

6

6

[(a+1)2−a2]

43(2a+

1)=

2a+1 = 12

a = 5.5

C-16-Q034