30. Find the quotient and remainder by dividing 2y3–14y+12 byy+3 using long division method.

2y3–14y+12 dks y+3 ls Hkkx nsus ij HkkxiQy o 'ks"kiQy Kkr dhft,A

OR (vFkok)

Divide 2x(7+8x2–3x)+2(4x–1) by (–2+2x)

2x(7+8x2–3x)+2(4x–1) dks (–2+2x) ls Hkkx nhft,A

31. A motorboat goes downstream and covers a distance in 4 hourswhile it covers the same distance upstream in 5 hours. If thespeed of the stream is 3 km/hrs, find the speed of the motorboat in still water.

,d uko èkkjk ds vuqdwy fdlh nwjh dks 4 ?kaVs esa r; djrh gS rFkk mlh nwjh

dks èkkjk ds izfrdwy 5 ?kaVs esa r; djrh gSA ;fn èkkjk dh xfr 3 fdeh izfr

?kaVk gS rks uko dh xfr fLFkj ty esa Kkr dhft,A

32. Construct a quadrilateral PQRS, in which PQ = 3.5 cm,

QR = 6.5 cm, 060P∠ = , 0120R∠ = & 075S∠ = .

,d prqHkqZt PQRS dh lajpuk dhft, ftlesa Øe'k% PQ = 3.5 lseh-,

QR = 6.5 lseh-, 060P∠ = , 0120R∠ = vkSj 075S∠ = A

33. The volume of a cylinder is 462 cm3 and has base area154 cm2. How much cloth will be required to cover it

completely?

,d yEc o`Ùkh; csyu dk vk;ru 462 lseh vkSj vkèkkj dk {ks=kiQy 154 oxZ

lseh gS rks mldks iwjk yisVus esa fdruk diM+k yxsxk\

34. The perimeter of a trapezium is 104 m, its non-parallel sidesare 18 m and 22 m, and its altitude is 16 m. Find the area oftrapezium.

fdlh leyEc dk ifjeki 104 eh gS rFkk bldh vleku Hkqtk;sa 18 eh o

22 eh dh gSa vkSj lekukUrj Hkqtkvksa ds chp dh nwjh 16 eh gSA leyEc dk

{ks=kiQy Kkr dhft,A

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