Mensuration Questions Practice Question and Answer
8 Q: The area of the base of a right circular cone is 81 cm2 and its height is 12 cm. What is the curved surface area (in cm2) of the cone?
1226 064b90d1d2bc994939035b51e
64b90d1d2bc994939035b51e- 1126 πfalse
- 2135 πtrue
- 3108 πfalse
- 4144 πfalse
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Answer : 2. "135 π"
Q: From four corners of a square sheet of side 4 cm, four pieces, each in the shape of arc of a circle with radius 2 cm, are cut out. The area of the remaining portion is:
1221 0633194d131300b7ce48a7bcc
633194d131300b7ce48a7bcc- 1(8– π) sq.cm.false
- 2(16–4 π) sq.cm.true
- 316–8 π) sq.cm.false
- 4(4–2 π) sq.cm.false
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Answer : 2. "(16–4 π) sq.cm. "
Q: What is the total surface area of a pyramid whose base is a square with side 8 cm and height of the pyramid is 3 cm?
1216 064abe3b5299b7896000b63f4
64abe3b5299b7896000b63f4- 1169 cm2false
- 2false
121 cm2
- 3true
144 cm2
- 4false
184 cm2
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Answer : 3. "144 cm2
"
Q: The volume of a cone is $${27720cm^2}$$. If the height of the cone is 20 cm, then what will be the area of the base?
1216 0642a981f9d18d2e8ae252844
642a981f9d18d2e8ae252844- 1$${4158cm^2}$$true
- 2$${4272cm^2}$$false
- 3$${4626cm^2}$$false
- 4$${4836cm^2}$$false
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Answer : 1. "$${4158cm^2}$$"
Q: The height and the radius of the base of a right circular cone are 12 cm and 6 cm respectively. The radius of the circular cross-section of the cone cut by a plane parallel to its base at a distance of 3 cm from the base is
1206 0638f342e34f83f1472981785
638f342e34f83f1472981785- 14 cmfalse
- 25.5 cmfalse
- 34.5 cmtrue
- 43.5 cmfalse
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Answer : 3. "4.5 cm"
Q: The area of a right-angled isosceles triangle having hypotenuse 16√2 cm is
1195 064d23868ebd5c374726efcd1
64d23868ebd5c374726efcd1- 1false
144 cm2
- 2true
128 cm2
- 3false
112 cm2
- 4false
110 cm2
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Answer : 2. "128 cm2
"
Q: Find the number of diagonals of a regular polygon, sum of whose interior angles is 27000.
1189 0649d8829a0e013744d4c41c1
649d8829a0e013744d4c41c1- 1121false
- 2119true
- 3127false
- 4117false
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Answer : 2. "119"
Q: The base of a right pyramid is a square of side 10 cm. If its height is 10 cm, then the are (in cm2) of its lateral surface is:
1188 064be612b874e2103e8cfb307
64be612b874e2103e8cfb307- 1$$50\sqrt { 5}$$false
- 2$$100$$false
- 3$$100\sqrt {5}$$true
- 4$$100\sqrt {5}+1$$false
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