# Posts by Anamika

Total # Posts: 44

math
Area =l^2 .81=l^2 9^2=l^2 L=9m Volume=l^3

trigonometry(height and distance)
The shadow of a tower when the angle of elevation of the sun is 45 degree is found to be 5m longer when it is 60 degree. Find the height of the tower.

trigonometry(opt math)
From the roof and basement of a house 20m high,the angle of elevation of the top of a tower are 45 and 60 degres respectively. Find the height of the tower. (Ans=81.97m)

trigonometry(height and distance)
Ans is correct can you show me fig.

trigonometry(height and distance)
The shadow of a tower when the angle of elevation of the sun is 45 degree is found to be 5m longer when it is 60 degree. Find the height of the tower.

Maths
1cake=360 When cake is divided into 18 part equally then 18part of cake=360/18=20degree Therefore AngleAOB =20degree Total surface area of cylinder= 2Pie r*h+2pie r^2 =2*22/7*23*12+2*22/7*23^2 =1734.85+3325.14 =5059.99

math
SI=(PTR)/100 . =(2000*4*4)/100 . =320 Present value=320+2000 . =2320

chemistry
what amount of ammonium chloride that will separate out when 55g of its solution at 373k is cooled to 273k(solubility at 373k -55g and at 273k - 37g)

Chemistry
No change of mass was observed when a definite amount of a mixture of KI and NaCl is converted to sulphate salts. What is the percentage composition of the mixture?

Chemistry
What is the reaction of dilute HCl with Zn?

Chemistry
2g AgCl is obtainded by adding an excess of AgNO3 solution to a solution containing 1g of a mixture of NaCl and KCl.What is the ratio of moles of two salts in the mixture?

Trigonometry
94.03ft

English Grammar
underline the subject and object in 'He was laughed at by all his friends.'

Maths
find the largest number that divides 615 and 963 leaving remainder 6 in each case.

maths
(Multiplication under distributive property) 26*(48)+(-48)*(-36)

physics
5.8 j

maths
In case of parabola y= x^2-2x-3 Find: a)Vertex: b)Axis: c)Focus: d)Directrix: e)Latus Rectum:

maths
ANDY HAS TWICE AS MANY MARBLES AS PANDY AND SANDY HAS HALF AS MANY HAS ANDY AND PANDY PUT TOGETHER .ANDY HAS 110 MARBLES WHICH IS 115 MARBLES LESS THAN SANDY.HOW MANY MARBLES EACH OF THEM HAVE

maths
the equation of the perpendicular bisectors of sides AB and AC of a triangle ABC are x-y+5=0 and x+2y=0 respectively. if the point is A (1,-2), find the equation of line BC.

maths
A vertical tower OP stands at the centre O of a square ABCD . Let hand b denote the length OP and AB respectively.Suppose angle APB = 60degree then the relationship between h and b can be expressed as

maths --plse help me..
MNT is a triangle in which A point lies on MN and B lies on MT. join AB. Now,if NT/AB =9/5 and if MB=10cm , then MN will be ??

maths --plse help me..
Prove that the radius of the base of right circular cylinder of greatest curved surface area which can be inscribed in a given cone is half that of the cone

maths --plse help me..
How many cubic centimeter of iron is required to construct an open box whose external dimensions are 36cm,25cm, and 16.5 cm provided the thickness of the iron is 1.5cm. If one cubic cm of iron weighs 7.5g find the weight of the box.

maths --plse help me..
THERE IS A SMALL ISLAND IN THE MIDDLE OF A 100M WIDE RIVER AND A TALL TREE STANDS ON THE ISLAND.pAND q RE POINTS DIRECTLY OPPOSITE EACH OTHER ON THE TWO BANKS AND IN LINE WITH THE TREE.IF THE ANGLE OF ELEVATION OF THE TOP OF THE TREE FROM p AND q ARE 30 DEGREES AND 45 DEGREES....

maths --plse help me..
A cuboid has total surface are 40cm^2 and its lateral surface area is 26cm^2.find the area of its base.

maths --plse help me..
The value of (₆√27-√27/4)^2 is:

maths
which is valuable abacus or vedic maths?

maths --plse help me..
A school has a hall which is 22 m long and 15.5 m broad . A carpet is laid inside the leaving all around a margin of 75 cm from the walls . Find the area of the carpet and the area of strip left uncovered . If the width of carpet is 82cm ,find its cost at the rate of Rs60 per m.

maths --plse help me..
find 6 no.s between 2/3 and 6/7.

differentiation
find dy/dx if xy log(x+y)=1

urgent -plsee
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)^7

urgent -plsee
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)7 .

maths --plse help me..
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)7 .

maths-probability
From the word HINDUSTAN ===== (a) In how many of these anagrams none of the vowels come together. (b) In how many of these anagrams do the vowels and the consonants occupy the same relative positions as in HINDUSTAN?

maths-geometry
how can we prove that parallelogram has parallel sides??

maths --plse help me..
plse read the question carefully...its find the area of quadrilateral not the rectangle.

maths --plse help me..
if tangent to the curve y=2sinx +sin2x are drawn at p(x=60degree) then find the area of the quadrilateral formed by the tangent the normal at P and the coordinate axis

Algebra
Write the answer to the following with the correct number of significant figure 14.2*8.5

For my son (maybe considered homework...)
For free Math worksheets and practice, you can also use website edugain