C-10-Q121mediumsingle_mcq

The exact (rationalized) form $h$ equals—

a $90 + 30\sqrt{3}$ m
b $30 + 90\sqrt{3}$ m
c $60\sqrt{3}$ m
d $60$ m

ব্যাখ্যা

Multiplying $\dfrac{60\sqrt{3}}{\sqrt{3}-1}$ by $\dfrac{\sqrt{3}+1}{\sqrt{3}+1}$ gives $\dfrac{60\sqrt{3}(\sqrt{3}+1)}{2}=30(3+\sqrt{3})=90+30\sqrt{3}$ . This is the exact rationalized height.

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q122With initial distance to the tower and elevation , equals—
C-10-Q123After moving m back, equals—
C-10-Q124Solving the two equations gives
C-10-Q125The tower height m is approximately—
C-10-Q126The width of the river (from observer to opposite bank under tower) equals—
C-10-Q127With standing piece and broken (slanting) piece falling from the break to the ground, the original pole length
C-10-Q128The vertical drop of the break equals the standing piece, giving
C-10-Q129Substituting and solving gives
C-10-Q130The approximate length of the broken piece is—
C-10-Q131The rationalized form equals—

Chapter 10: Distance and Elevation — সব প্রশ্ন দেখুন (160টি) →

The exact (rationalized) form $h$ equals—

90 + 30\sqrt{3}

30 + 90\sqrt{3}

60\sqrt{3}

60

ব্যাখ্যা

Multiplying $\dfrac{60\sqrt{3}}{\sqrt{3}-1}$ by $\dfrac{\sqrt{3}+1}{\sqrt{3}+1}$ gives $\dfrac{60\sqrt{3}(\sqrt{3}+1)}{2}=30(3+\sqrt{3})=90+30\sqrt{3}$ . This is the exact rationalized height.

The exact (rationalized) form hhh equals—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

The exact (rationalized) form hhh equals—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

The exact (rationalized) form $h$ equals—

The exact (rationalized) form $h$ equals—