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Sonal
Questions (9)
Which colour fur will best protect a rabbit from a hawk on a snowy field?
1) brown 2) gray 3) white 4) black
1 answer
58 views
Which cycle is correct?
1) morning-sunrise-afternoon-sunset 2) summer-Autumn-winter-spring 3) seed mature-plant-fruit-seeding 4)
1 answer
62 views
A mark on the rim of a rotating circular wheel of 0.50m radius is moving with a speed of 10s^-1a.find the angular speed
1 answer
664 views
An organization is having its seven department located on 3 floors of a building,3 on groubd, 2 on first & 2 on the second floor
0 answers
441 views
entropy is not a good criteria for determining the spontanecity of a process.give reason.
1 answer
418 views
Prove that
(2n)!/n!=1x3x5.........(2-1)x2n.
0 answers
409 views
prove that the equation of straight line which passes through the point (a cos^3a, sin^3a) & is perpendicular to the straight
1 answer
535 views
an electron with velocity v=3x10 to the power 7 m/s describes a circular path in a uniform magnetic field of 0.2T perpendicular
1 answer
485 views
when a wire of length 5m & radius 0.5mm is stretched by a load of 49N the elongation produced in the wire is 0.1cm find the
1 answer
614 views
Answers (5)
C.p.=360, profit = 40(given) S.p.= 360+40= 400 Let marked price is x, Discount =(100/9% of x)= x/9 Price after discount will be selling price of the article. X-(x/9)=400 8x/9=400 X=450.
If 3/4 th part is covered by water , remaining part will pe area of land I.e. 1-3/4= 1/4 th part Radius given=6370 , Area is sphere= 4πr^2 1/4(4*22/7*6370*6370) After solving we will get the ans as -- 127527400 km^2 Hope helped !
In above sum R = outer radius r= inner radius Sorry for the mistake
Total surface area = inner curved surface area + outer curved surface area + area of 2 rings We will consider , R=outer curved surface area r=inner curved surface area h=given lenght =2πRh + 2πrh + πR^2 + πr^2 =π(r +R )+(2h + R-r ) After solving with
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