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Samyuktha M. S
Subject: Maths
, asked on 24/3/18
a metallic right circular cone 20cm high and whose vertical angle is 90 degree is cut into two parts at the middle point of its axis by a plane parallel to its base.if the frustum so obtained is melted and drawn into a wire 1cm in diameter, find the length of the wire?? (NO LINKS PLEASE^^^)
Answer
3
Shweta Verma
Subject: Maths
, asked on 24/3/18
Q28. An ice- cream?seller has two types of ice-cream containers one in the form of cylindrical shape and another in the shape of a frustum. Both have the same height 7 cm and the diameter of cylindrical container is 7 cm. Upper and lower radii of frustum are 3.5 cm and 3 cm respectively.?
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? [?????=???227?]?
? ?(a) Calculate the volume of both the containers.?
? ?(b) If the cost of the containers is the same and the seller prefers to sell ice- cream in the cylindrical container, then which value is depicted by the seller?
Answer
3
Champ Jee
Subject: Maths
, asked on 23/3/18
Que 34)
Is the answer 4.05 m or 405 cm??
(Please don't give me similar links; I want exact ans for this). Thank you
34. Water is flowing through a cylinder pipe. Of internal diameter 3 cm into a cylinder tank of base radius 40 cm, at the rate 0.4 m/s . Determine the rise in level of water in the tank in half an hour.
Answer
6
Samartha Maheshwari
Subject: Maths
, asked on 23/3/18
In ex.12 ch. Surface area, the value of L comes out to be 49.65, i took it 50, but the CSA is increased by 39 (5500 to 5461.5). So if this happens in exam will my marks get cut? Because solving square roots with decimals is not possible in exams
Answer
1
Champ Jee
Subject: Maths
, asked on 23/3/18
Solve this :
I suspect the given answer key in the book is wrong.
Please provide no similar question links. I want answer for this!
Q.
In figure
APB and AQP are semi-circles, and AO = OB. If the perimeter of the figure is 40 cm, find area of the shaded region.
Use
π
=
22
7
.
Answer
2
Knight Rider🚲
Subject: Maths
, asked on 22/3/18
How can we define the frustum of a cone ??
Answer
4
Kumar Vk
Subject: Maths
, asked on 4/3/18
The radii of the bases of two right circular solid cones of same height are
r
1
and
r
2
respectively. The cones are milted and recast into a solid sphere of radius
R
. Show that the height of each cone is given by
h
=
4
R
3
r
1
3
+
r
2
3
.
Answer
1
Zaid Khan
Subject: Maths
, asked on 2/3/18
9 th plzz
Q.9. A solid cube is cut into 27 small cubes of equal volume. Find the ratio of the surface area of the given cube and that of the small cube.
Answer
1
Kartik Saxena
Subject: Maths
, asked on 2/3/18
If we cut cone into three pieces than what is the ratio of its curved surface area
Answer
1
Tanya Shankar
Subject: Maths
, asked on 2/3/18
Pls solve this
EXAMPLE 14 A godown building is in the form as shown in Fig. 16.29. The vertical cross-section parallel to the width side of the building is a rectangle 7 m
×
3 m, mounted by a semi-circle of radius 3.5 m. The inner measurements of the cuboidal portion of the building are 10 m
×
7 m
×
3 m. Find the volume of the godown and the total interior surface area excluding the floor (base). (Take
π
= 22/7)
Answer
2
Tanya Shankar
Subject: Maths
, asked on 2/3/18
Pls solve this
Answer
1
Tanya Shankar
Subject: Maths
, asked on 2/3/18
Pls solve this
Answer
1
Tanya Shankar
Subject: Maths
, asked on 2/3/18
Please solve this question
Answer
5
Harsh
Subject: Maths
, asked on 1/3/18
Two solid cones A and B are placed in a cylindrical tube as shown in the figure. The ratio of their capacities is 2 : 1. Find the heights and capacities of the cones.
Answer
2
Sahil Haque
Subject: Maths
, asked on 27/2/18
The cost of planting grass in a circular Park at the rate of rupees 4.90/m2 is rupees 26,649. A path of uniform width runs around the park. The cost of gravelling the path at the rate of rupees 3.50/m2 is rupees 3,696. Find the cost of fencing the path on both side at the rate of rupees 2.10/m2.
Answer
2
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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? [?????=???227?]?
? ?(a) Calculate the volume of both the containers.?
? ?(b) If the cost of the containers is the same and the seller prefers to sell ice- cream in the cylindrical container, then which value is depicted by the seller?
Is the answer 4.05 m or 405 cm??
(Please don't give me similar links; I want exact ans for this). Thank you
34. Water is flowing through a cylinder pipe. Of internal diameter 3 cm into a cylinder tank of base radius 40 cm, at the rate 0.4 m/s . Determine the rise in level of water in the tank in half an hour.
Please provide no similar question links. I want answer for this!
Q. In figure APB and AQP are semi-circles, and AO = OB. If the perimeter of the figure is 40 cm, find area of the shaded region.
Q.9. A solid cube is cut into 27 small cubes of equal volume. Find the ratio of the surface area of the given cube and that of the small cube.
EXAMPLE 14 A godown building is in the form as shown in Fig. 16.29. The vertical cross-section parallel to the width side of the building is a rectangle 7 m 3 m, mounted by a semi-circle of radius 3.5 m. The inner measurements of the cuboidal portion of the building are 10 m 7 m 3 m. Find the volume of the godown and the total interior surface area excluding the floor (base). (Take = 22/7)