Volume and Surface Area Questions Practice Question and Answer
8 Q: A solid metallic cylinder of base radius 5 cm and height 7 cm is melted to form cones, each of height 1 cm and base radius 1 mm. Find the number of cones?
1199 05ee9a1f7b1ffa91fd4a38bec
5ee9a1f7b1ffa91fd4a38bec- 153500false
- 249500false
- 351500false
- 452500true
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Answer : 4. "52500"
Q: A polygon has 14 sides then find out No. of diagonals in that polygon.
1197 05e8afd2bbd0d850c66cb13a2
5e8afd2bbd0d850c66cb13a2- 175false
- 276false
- 377true
- 480false
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Answer : 3. "77 "
Q: From a right cone of height h and with base radius r a cone has been cut of from the centre of the height. The volume of remaining frustum of the cone is.
1196 05f8016fb0a69ab3becc7d418
5f8016fb0a69ab3becc7d418- 1$$ {1\over3}π{r^{2}}h$$false
- 2$$ {1\over24}π{r^{2}}h$$false
- 3$$ {7\over24}π{r^{2}}h$$true
- 4$$ {1\over8}π{r^{2}}h$$false
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Answer : 3. "$$ {7\over24}π{r^{2}}h$$"
Q: In the figure given below, AD bisects ∠BAC. If the area of ΔABD=40 cm2 and AC=3AB, then the area of ΔABC:
1195 05f59ce72b772fe2f8b222a04
5f59ce72b772fe2f8b222a04- 1$$ {150 \ cm^{2}}$$false
- 2$$ {100 \ cm^{2}}$$false
- 3$$ {120 \ cm^{2}}$$true
- 4$$ {160 \ cm^{2}}$$false
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Answer : 3. "$$ {120 \ cm^{2}}$$"
Q: The area of a circle is 616 sq cm, find its circumference?
1193 05f0e7954dcdb5f61f5c2fab3
5f0e7954dcdb5f61f5c2fab3- 144 cmfalse
- 288 cmtrue
- 322 cmfalse
- 4176 cmfalse
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Answer : 2. "88 cm"
Q: If the perimeter of a triangle is 30 cm and the area is 30 square cm, if the length of the larger side is 13 cm, then what is the length of the shorter side?
1188 05f801aa64e4f797ddbd81c04
5f801aa64e4f797ddbd81c04- 14 cmfalse
- 26 cmfalse
- 35 cmtrue
- 410 cmfalse
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Answer : 3. "5 cm"
Q: A cylindrical well of depth 21 m with internal radius of 13 m is dug up. The mud, so detained, is spread evenly to form a platform of dimension 52 × 13.2. What is the height of the platform?
1188 06058670a9982dc053f987d21
6058670a9982dc053f987d21- 162.5 mfalse
- 237.5 mtrue
- 313.4 mfalse
- 418.2 mfalse
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Answer : 2. "37.5 m"
Q: The area of the base of a right circular cone is 400π and its height is 15 cm. The curved surface of the cone ( in cm2) is:
1186 05f40ddd354900c5349e9ce36
5f40ddd354900c5349e9ce36- 1560 πfalse
- 2500 πtrue
- 3450 πfalse
- 4480 πfalse
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