 ## In triangle ABC, D and E are mid-points of the sides BC and AC respectively. Find the length of DE. Prove that DE = 1/2AB.​

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Please solve this question i am not able to solve this one, here in this question a triangle ABC is ...Read more

## Find the area of the quadrilateral ABCD, whose vertices are A(1,0),B(5,3),C(2,7) and D(−2,4).

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In this question, we have to find the area of the quadrilateral whose coordinates of 4 vertices are given to ...Read more

## If the length, breadth and height of a solid cube are in the ratio 4 : 3 : 2 and total surface area is 832 cm2. Find its volume?

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I am getting slightly confused in this question. When i am applying the total surface area formula my x  is ...Read more

## If the radius of the base of a cone is doubled, keeping the height the same, what is the ratio of the volume of the larger cone to the smaller cone?

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Well in this question we have to double the radius of the base of a cone, keeping the height the ...Read more

## An open container made up of a metal sheet is in the form of a frustum of a cone of height 8 cm with radii of its lower and upper ends as 4 cm and 10 cm respectively. Find the cost of oil which can completely fill the container at the rate of Rs. 50 per litre. Also, find the cost of metal used, if it costs Rs. 5 per 100 cm2.

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In this question, we have to find two things (i) Cost of oil which can completely fill the container at the ...Read more

## A iron pillar has some part in the form of a right circular cylinder and remaining in the form of a right circular cone. The radius of the base of each of cone and cylinder is 8 cm. The cylindrical part is 240 cm high and the conical part is 36 cm high. Find the weight of the pillar if 1cm cube of iron weighs 7.8 grams.

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This question is very tricky and also very important. i am not able to calculate it properly. My answer is ...Read more

## A bag contains 10 red, 5 blue and 7 green balls. A ball is drawn at random. Find the probability of this ball being not a blue ball.

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This question is from probability chapter class 10th ncert/icse both boards included in this question A bag is given which ...Read more