Question 1 :
If the area of a rhombus of side x cm be y$\displaystyle cm^{2}$ then the true statement is
Question 2 :
A right circular cylinder has a volume of $81\pi$. If the circumference of the base is $6\pi$, what is the height?
Question 3 :
$D, E, F$ are the midpoints of the  sides $BC, CA, AB$ respectively of  $\Delta ABC$, then the ratio area $\Delta DEF$  : area $\Delta ABC$ is equal to<br/>
Question 4 :
A right circular cone and a right circular cylinder have equal base and equal height. If the radius of the base and the height are in the ratio $5:12$ respectively, then the ratio of the total surface area of the cylinder to that of the cone is __________.<br>
Question 5 :
A cow is tied at the corner of a square field with 21 m long rope. The side of the square is 25 m The area of the field on which the cow cannot graze is
Question 6 :
The diagonals of a quadrilateral are $16\ cm$ and $13\ cm$. If they intersect each other at right angles; find the area of the quadrilateral.
Question 8 :
If the radius and height of a right circular cylinder are $4$ cm and $7$ cm respectively, then its volume will be
Question 9 :
Find the area of a rhombus whose side is $6\;cm$ and whose altitude is $4\;cm$. If one of its diagonals is $8\;cm$ long, find the length of the other diagonal.
Question 10 :
Area of a rhombus is $256\ cm^{2}$. One of the diagonal is twice of the other diagonal. The sum of the diagonals is:
Question 11 :
The cross-section of a canal is in the shape of a trapezium. If the canal is $8$ m wide at the top and $6$ m wide at the bottom and the area of cross-section is $644\: m^2$, then the length of  the canal is<br/>
Question 12 :
The length of a side of a rhombus is $5\ m$ and one of its diagonals is length $8\ m$. The length of the other diagonal is
Question 13 :
The area of a rhombus is 80 $cm^2$ and the length of its one diagonal is 20 cm. The length of the other diagonal of the rhombus is----
Question 14 :
The diagonals of a rhombus are $12 cm$ and $16 cm$. Find the length of its one side in cm.<br>
Question 15 :
The lengths of the diagonals of a rhombus are 24 cm and 32 cm The perimeter of the rhombus is
Question 16 :
If the height of cylinder is halved keeping the radius constant , its volume will be
Question 18 :
A rectangle is 8 cm long and 5 cm wide Its perimeter is doubled when each of its sides is increased by $x$ cm. What is the new length?
Question 19 :
An Olympic swimming pool is in the shape of a cuboid of dimensions $50$ m long and $25$ m wide. If it is $3$ m deep throughout, how many liters of water does it hold?
Question 20 :
If the radius of a cylinder is tripled but its curved surface area is unchanged, then its height will be ......