The curved surface area of a hemisphere is 2772 sq cm and volume is 19404 cubic cm, what is its radius? (Take π = $\frac{22}{7}$)1). 42 cms2). 21 cms3). 10.5 cms4). 31.5 cms
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1. The sum of the parallel sides of a trapezium is 12.4 cm. If the distance between the parallel sides is 3.5 cm, what is the area of this trapezium?
2. A regular octagon is obtained from a square of side 18 cm by trimming the four edges. Which of the following is the area of the octagon.
3. A right cylindrical vessel is full with water. How many right cones having the same diameter and height as that of the right cylinder will be needed to store that water (Take $\pi$ = $\frac{22}{7}$)
4. If the diagonal of a square is increased by 20%, then the area of the square is increased by:
5. The perimeters of a circle, a square and an equilateral triangle are same and their areas are C, S and T respectively. Which of the following statement is true
6. The perimeter of two squares are 40 cm and 32 cm.The perimeter of a third square whose area is the difference of the area of the two squares is
7. The volume (in cu.m.) of rain water that can be collected from 1.5 hectares of ground in a rainfall of 5 cm is
8. The circumference of a circle is 11 cm and the angle of a sector of the circle is $60^{0}$. The area of the sector is ( Use $\pi$ = $\frac{22}{7}$)
9. What is the height of a cylinder that has the same volume and radius as a sphere of diameter 12 cm
10. Given that : $\triangle ABC\sim \triangle PQR$. If $\frac{area(\triangle PQR)}{area(\triangle ABC)}$ = $\frac{256}{441}$ cm, and PR=12 cm, then AC is equal to
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