Mensuration Practice Question and Answer
8 Q: Find the cost in rupees for carpeting a room 65dm× 30 dm at Rs. 45 per sq.m
1177 0607581c7e170a5231dc8a282
607581c7e170a5231dc8a282- 187750false
- 2877.50true
- 387.75false
- 48775false
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Answer : 2. "877.50"
Q: If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area? 2052 05b5cc6b9e4d2b4197774d69e
5b5cc6b9e4d2b4197774d69e- 141%false
- 238%true
- 333%false
- 444%false
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Answer : 2. "38%"
Explanation :
Answer: B) 38% Explanation: % Change in Curved Surface Area is given by %Change in radius + %Change in height + %Change in radius × %Change in height 100 ⇒+20 + 15 + 20×15100 = 38%
Q: Length and breadth of a rectangular field is 140 m. and respectively. Poles have to be fixed around this field at the distance of 5 m. How many such poles are required? 4160 05d108ab887e3540b926c1b9c
5d108ab887e3540b926c1b9c- 188false
- 240false
- 392true
- 441false
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Answer : 3. "92"
Q: Ratio of length, breath and height of a room is 5:4:2. Area of four wall is 144 square meter. Find diagonal of the floor. 4629 05d10905f406b950bb95b0dcc
5d10905f406b950bb95b0dcc- 12√41 mtrtrue
- 23√41 mtrfalse
- 32√42 mtrfalse
- 42√41 mtrfalse
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Answer : 1. "2√41 mtr "
Explanation :
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Q: The area of a rectangle with 10 cm length is equal to the area of a circle. Find the circumference of the circle. 3409 15d109aef87e3540b926c1bde
5d109aef87e3540b926c1bde- 136 cmfalse
- 234 cmfalse
- 326 cmfalse
- 4cannot be determinedtrue
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Answer : 4. "cannot be determined"
Explanation :
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Q: A hemispherical cup of radius 4 cm is filled to the brim with coffee. The coffee is then poured into a vertical cone of radius 8 cm and height 16 cm. The percentage of the volume of the cone that remains empty is:
1857 05d70a88b56d6e076952aefba
5d70a88b56d6e076952aefba- 187.5%true
- 280.5%false
- 381.6%false
- 488.2%false
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Answer : 1. "87.5%"
Q: The circumference of a circle is 792 m. What will be its radius?
1409 05df0b7d0e837331209ea165d
5df0b7d0e837331209ea165d- 1120 mfalse
- 2133 mfalse
- 3145 mfalse
- 4136 mfalse
- 5None of thesetrue
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Answer : 5. "None of these"
Q: Two circles of radii 4 cm and 9 cm respectively touch each other externally at a point and a common tangent touch them at the points P and Q respectively. Then the area of square with one side PQ, is:
1138 1614dbce832dce73936326e31
614dbce832dce73936326e31- 172 $$cm^2$$false
- 2144 $$cm^2$$true
- 397 $$cm^2$$false
- 4194 $$cm^2$$false
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