Volume and Surface Area Practice Question and Answer
6 4 Q:
5f76b9f853f6013e85bed71d 4 Q:
60093c3d70bfa73e5e1df2de 4 Q:
5f76ba624637db732848783f 4 Q:
6019075765f04759038196e1 4 Q:
5f1e650526299776aa406ba6 Answer : 1. "3080"
4 Q:
5fa916c0ece37f51362def63
Q: 42 cm a circular wire of diameter is folded into a rectangle whose sides are in the ratio 6: 5. What will be the area of the rectangle?
1136 05f76b9f853f6013e85bed71d
5f76b9f853f6013e85bed71d- 1900 sq. cm.false
- 21080 sq. cm.true
- 31000 sq cmfalse
- 44320 sq. cm.false
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Answer : 2. "1080 sq. cm."
Q: What is the area ( in cm2 ) of the circumcircle of a triangle whose sides are 6 cm , 8 cm and 10 cm respectively ?
1133 060093c3d70bfa73e5e1df2de
60093c3d70bfa73e5e1df2de- 1$$ {275\over 7}$$false
- 2$$ {2200\over 7}$$false
- 3$$ {550\over 7}$$true
- 4$$ {1100\over 7}$$false
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Answer : 3. "$$ {550\over 7}$$"
Q: The perimeter of a circle is equal to the square perimeter. What will be the ratio of their areas?
1130 05f76ba624637db732848783f
5f76ba624637db732848783f- 14 : 1false
- 211 : 7false
- 314:11true
- 411:14false
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Answer : 3. "14:11"
Q: In a circle, difference between the circumference and radius is 37 cm. Find the area (in cm²) of the circle?
1115 06019075765f04759038196e1
6019075765f04759038196e1- 1616false
- 2154true
- 3308false
- 477false
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Answer : 2. "154 "
Q: The radius of a cone is 20 cm and height is 21 cm, the total surface area of the cone is in square cm:
1102 05f1e650526299776aa406ba6
5f1e650526299776aa406ba6- 13080true
- 23160false
- 32920false
- 43240false
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Answer : 1. "3080"
Explanation :
$$ {πr^2+πrl}$$
Q: What will be the area of the curved surface of an elliptical cylinder whose height and diameter are 10 cm and 8 cm respectively?
1072 05fa916c0ece37f51362def63
5fa916c0ece37f51362def63- 120 πfalse
- 2168 πfalse
- 380 πtrue
- 440 πfalse
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Answer : 3. "80 π"
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