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Deepak BoraNewbie

Asked: July 19, 2020In: CBSE

Find the roots of the equation x2 – 3x – m (m + 3) = 0, where m is a constant.

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Quadratic equation class 10 cbse

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Deepak BoraNewbie

Asked: July 31, 2020In: CBSE

Draw a circle of radius 3.5 cm. Take a point P outside the circle at a distance of 7 cm from the center of the circle and construct a pair of tangents to the circle from that point.

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CBSE 10th Class Mathematics Past year question paper Year 2020 SET 1, Code Number – 30/5/1 Question Number – 32 ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A hemisphere of maximum possible diameter is placed over a cube block of side 7 cm. Find the surface area of the solid so formed.

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Last time this problem was asked in cbse 2017 board exam. Question number 29 [i] from RS Aggarwal book page ...Read more

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Deepak BoraNewbie

Asked: August 31, 2020In: CBSE, Competition, ICSE, IIT

Argument of a Complex Number

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Why does the Principal Argument of any Complex Number lie between -π to π. ? Isn’t that the Equivalent of ...Read more

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Deepak BoraNewbie

Asked: August 9, 2020In: CBSE

A copper wire of diameter 6 mm is evenly wrapped on a cylinder of length 18 cm and diameter 49 cm to cover its whole surface. Find the length and the volume of the wire. If the density of the copper be 8.8 g per cm 3 , then find the weight of the wire.

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This is one of the important question as well as HOT question. Question number 33 from RS Aggarwal book page ...Read more

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Deepak BoraNewbie

Asked: August 12, 2020In: CBSE

The radii of the circular ends of a solid frustum of a cone are 18 cm and 12 cm and its height is 8 cm. Find its total surface area.

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This is the important problem, in this problem use π = 3.14, Problem from RS Aggarwal book, Problem number 2, ...Read more

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Deepak BoraNewbie

Asked: August 12, 2020In: CBSE

A metallic bucket, open at the top, of height 24 cm is in the form of the frustum of a cone, the radii of whose lower and upper circular ends are 7 cm and 14 cm, respectively. Find i] the volume of water which can completely fill the bucket; ii] the area of the metal sheet used to make the bucket.

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This question was asked in 2014 cbse board exam. Question from RS Aggarwal book chapter volume and surface area of ...Read more

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Find the roots of the equation x2 – 3x – m (m + 3) = 0, where m is a constant.

Draw a circle of radius 3.5 cm. Take a point P outside the circle at a distance of 7 cm from the center of the circle and construct a pair of tangents to the circle from that point.

A hemisphere of maximum possible diameter is placed over a cube block of side 7 cm. Find the surface area of the solid so formed.

Argument of a Complex Number

A copper wire of diameter 6 mm is evenly wrapped on a cylinder of length 18 cm and diameter 49 cm to cover its whole surface. Find the length and the volume of the wire. If the density of the copper be 8.8 g per cm 3 , then find the weight of the wire.

The radii of the circular ends of a solid frustum of a cone are 18 cm and 12 cm and its height is 8 cm. Find its total surface area.

A metallic bucket, open at the top, of height 24 cm is in the form of the frustum of a cone, the radii of whose lower and upper circular ends are 7 cm and 14 cm, respectively. Find i] the volume of water which can completely fill the bucket; ii] the area of the metal sheet used to make the bucket.