Maths 12 Science Three Dimensional Geometry CBSE Answers for MCQ in English to enable students to get Answers in a narrative video format for the specific question.

Expert Teacher provides Maths 12 Science Three Dimensional Geometry CBSE Answers for MCQ through Video Answers in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Three Dimensional Geometry not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

** Question:**

** Answer Video in** **English****:**

**Question 1** : Find the distance between the point (7, 2, 4) and the plane determined by the points A(2, 5, -3), B(-2, -3, 5) and C(5, 3, -3). (View Answer Video)

**Question 2** : If lines and intersect, then find the value of k and hence find the equation of plane containing these lines. (View Answer Video)

**Question 3** : Find the distance of the point from the plane 3x + y - z + 2+0 measured parallel to the line Also, find the foot of the perpendicular from the given point upon the given plane. (View Answer Video)

**Question 4** : The cartesian equation of a line is , write its vector form. (View Answer Video)

**Question 5** : Find the vector and cartesian equations of the plane passing through the point (-1, 3, 2) and perpendicular to each of the planes x + 2y +3z = 5 and

3x + 3y + z = 0. (View Answer Video)

**Question 1** : A balloon, which always remains spherical on inflation, is being inflated by pumping in 900 cubic centimetres of gas per second. Find the rate at which the radius of the balloon increases when the radius is 15 cm. (View Answer Video)

**Question 2** : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

**Question 3** : The maximum value of is, (View Answer Video)

**Question 4** : The total revenue (in Rs) received from the sale of 'x' units of a product is given by :

R(x) =3x^{2}+36x+5.

FInd the marginal revenue when x=5, where by marginal revenue we mean the rate of change of total revenue with respect to the number of items sold at an instant. (View Answer Video)

**Question 5** : The normal at the point (1,1) on the curve is (View Answer Video)

**Question 1** : Find the area bounded by curves . (View Answer Video)

**Question 2** : Find the area enclosed between the parabola and the line y = mx. (View Answer Video)

**Question 3** : Using integration, find the area of the region bounded by the triangle whose vertices are (-1, 2), (1, 5) and (3, 4). (View Answer Video)

**Question 4** : Using integration, find the area of the region bounded by the curves and y = x. (View Answer Video)

**Question 5** : Find the area of the region bounded by the curves and x = 3. (View Answer Video)

**Question 1** : Write the degree of the differential equation : (View Answer Video)

**Question 2** : Find the solution of the differential equation (View Answer Video)

**Question 3** : Find the sum of the order and the degree of the following differential equation:

(View Answer Video)

**Question 4** : Write the differential equation formed from the equation y = mx + c, where m and c are arbitrary constants.

(View Answer Video)

**Question 5** : Find the differential equation of the family of lines passing through the origin. (View Answer Video)