Volume and Surface Area Practice Question and Answer
8 Q: A circular park whose diameter is 210 m has a 5 m wide path running around it(on the outside). What is the area ( in m2) of the path?
1087 05fbe70c9aa47db563875b7ae
5fbe70c9aa47db563875b7ae- 11020 πfalse
- 21075 πtrue
- 31050 πfalse
- 41100 πfalse
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Answer : 2. "1075 π"
Q: The slant height of a right circular cone is 15 m and its height is 9 m. The area of its curved surface, is:
1076 060c09b7f3a55aa3a4ad09e08
60c09b7f3a55aa3a4ad09e08- 1169 π m2false
- 2172 π m2false
- 3165 π m2false
- 4180 π m2true
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Answer : 4. "180 π m2"
Q: The perimeter of an isosceles, right angled triangle is 2p unit. The area of the same triangle is
1076 060b7166dcef13e72bbf9983c
60b7166dcef13e72bbf9983c- 1$$ {(3-2\sqrt{2})}{\ p^{2}} sq.unit $$true
- 2$$ {(2+\sqrt{2})}{\ p^{2}} sq.unit $$false
- 3$$ {(2-\sqrt{2})}{\ p^{2}} sq.unit $$false
- 4$$ {(3-\sqrt{2})}{\ p^{2}} sq.unit $$false
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Answer : 1. "$$ {(3-2\sqrt{2})}{\ p^{2}} sq.unit $$"
Q: A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls The diameter of two of these are 1.5 cm and 2 cm respectively. The diameter of the third ball is
1076 060113124af82aa3010a223e5
60113124af82aa3010a223e5- 11.4 cmfalse
- 21.8 cmfalse
- 32.1 cmfalse
- 42.5 cmtrue
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Answer : 4. "2.5 cm"
Q: The length, width and height of a cuboid are 18 cm, 24 cm, and 4 cm, respectively. The volume of the cube is equal to the volume of the given cuboid. The arm of the cube is:
1073 05f1e6b911b4d8003eeb0374e
5f1e6b911b4d8003eeb0374e- 116 cmfalse
- 212 cmtrue
- 39 cmfalse
- 48 cmfalse
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Answer : 2. "12 cm"
Q: The figure below is an equilateral triangle with sides of length 6. What is the area of the triangle?
1071 05ffc2e4d23210f22f3302d24
5ffc2e4d23210f22f3302d24- 1$$ {9\sqrt{3}:1}$$true
- 216false
- 318false
- 4$$ {12\sqrt{3}:1}$$false
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Answer : 1. "$$ {9\sqrt{3}:1}$$"
Q: If the curved surface area of a right circular cone is 10010 sq cm and its slant height is 91 cm, find its total surface area.
1070 05feee2ae1f464d740159ed76
5feee2ae1f464d740159ed76- 127720 sq cmfalse
- 24620 sq cmfalse
- 36930 sq cmfalse
- 413860 sq cmtrue
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Answer : 4. "13860 sq cm"
Q: What will be the area (cm2) of the curved surface of an elliptical cylinder whose height and diameter are 10 cm and 8 cm respectively?
1069 05f6d79f8f9079a64e3be1fc4
5f6d79f8f9079a64e3be1fc4- 120 πfalse
- 280 πtrue
- 3160 πfalse
- 440 πfalse
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