C-10-Q126mediumsingle_mcq

The width of the river (from observer to opposite bank under tower) equals—

a $16$ m
b $32$ m
c $16\sqrt{3}$ m
d $8$ m

ব্যাখ্যা

The river width is the initial horizontal distance $x$ from the observer to the foot of the tower, which was found to be $16$ m. So the river is $16$ m wide.

এই অধ্যায়ের আরও প্রশ্ন

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—
C-10-Q132With standing piece and slanting piece touching ground at where m and , gives
C-10-Q133Numerically is approximately—
C-10-Q134From , the slanting piece equals—
C-10-Q135The total height of the original tree is—
C-10-Q136Approximately, the tree was—

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