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Class 9 Exam  >  Class 9 Tests  >  Test: Surface Area of a Cone - Class 9 MCQ

Test: Surface Area of a Cone - Class 9 MCQ


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10 Questions MCQ Test - Test: Surface Area of a Cone

Test: Surface Area of a Cone for Class 9 2024 is part of Class 9 preparation. The Test: Surface Area of a Cone questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Surface Area of a Cone MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Surface Area of a Cone below.
Solutions of Test: Surface Area of a Cone questions in English are available as part of our course for Class 9 & Test: Surface Area of a Cone solutions in Hindi for Class 9 course. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free. Attempt Test: Surface Area of a Cone | 10 questions in 10 minutes | Mock test for Class 9 preparation | Free important questions MCQ to study for Class 9 Exam | Download free PDF with solutions
Test: Surface Area of a Cone - Question 1
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The area surrounded by a conical tent is 4526 m2. If the cost of canvas is Rs. 17 per square meter, then find the total cost of canvas.​

Detailed Solution for Test: Surface Area of a Cone - Question 1

total cost = area of canvas used x cost of per meter square canvas

= 4526 x 17 

= Rs. 76942

Test: Surface Area of a Cone - Question 2
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The height of a right circular cone is 3 cm and its base radius is 4 cm. Find the curved surface area of the cone

Detailed Solution for Test: Surface Area of a Cone - Question 2

The curved surface area (CSA) of a cone is given by:

CSA = πrl

Where:

  • r = base radius of the cone
  • l = slant height of the cone

The slant height l can be calculated using

 

Calculating CSA

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Test: Surface Area of a Cone - Question 3
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A conical tomb of base diameter 24m and height 16 m. What is the curved surface area?

Detailed Solution for Test: Surface Area of a Cone - Question 3


Test: Surface Area of a Cone - Question 4
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The curved surface area of a right circular cone whose slant height is 14 cm and base radius is 21 cm is​
Detailed Solution for Test: Surface Area of a Cone - Question 4

L = 14 cm
R = 21 cm
C S A of Cone = πRL
22/7 * 21 * 14 cm
22 * 21 * 2 cm
462 * 2 cm
924 cm2

Test: Surface Area of a Cone - Question 5
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A conical tent is 15 m high and the radius of its base is 20 m. The cost of the canvas required to make the tent at the rate of Rs 7 per m2 is​
Test: Surface Area of a Cone - Question 6
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The solid generated by the rotation of a right triangle about one of its sides containing the right angle is called a ………
Detailed Solution for Test: Surface Area of a Cone - Question 6
When the triangle is rotated about its side it becomes the height of the cone and the other side containing the right angle becomes the radius..
Test: Surface Area of a Cone - Question 7
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The total surface area of a cone of slant height 9 cm and radius 5 cm is​
Test: Surface Area of a Cone - Question 8
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A right circular cone has an altitude of 40 cm and a diameter of 60 cm. The slant height of the cone is
Detailed Solution for Test: Surface Area of a Cone - Question 8

d=60
so r=30
l=√r2+h2
l= √302+402
l=50

Test: Surface Area of a Cone - Question 9
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An ice cream cone has base radius 6 cm and altitude 8 cm. The total surface area of 21 such cones is​
Test: Surface Area of a Cone - Question 10
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The curved area of a cone is 242 cm2 and its radius and slant height are in the ratio 7:11. Calculate the radius of the cone.​
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