[1 Mark Question Answer]

Question 11 Mark

Find the volume of the cylinder in which : diameter = 70 cm and height = 20 m

Answer

$7.7 m^3$

Question 21 Mark

Find the volume of the cylinder in which : height = 42 cm and base radius = 10 cm.

Answer

$13200 cm^3$

Question 31 Mark

The surface area of a cuboid is $468 cm^2$. Its length and breadth are 12 cm and 9 cm respectively. Find its height.

Answer

6 m
$[Hint \left.: 2(l b+b h+h l)=468 \Rightarrow b h+h l=234-12 \times 9 \Rightarrow h(l+b)=126 \Rightarrow h=\frac{126}{12+9}\right]$

Question 41 Mark

The volume of a cuboid is $972 m^3$. If its length and breadth be 16 m and 13.5 m respectively, find its height.

Answer

4.5 m

Question 51 Mark

Find the length of the longest pole that can be placed in a room 12 m long, 8 m broad and 9 m high.

Answer

17 m
[Hint : Length of the longest pole that can be placed = length of the diagonal.]

Question 61 Mark

The volume of a cube is $343 cm^3$. Find its surface area.

Answer

$294 cm^2$

Question 71 Mark

The volume of a cube is 216 cubic cm. Find its surface area.

Answer

$216 cm^2$

Question 81 Mark

The surface area of a cube is $1176 cm^2$. Find its volume.

Answer

$2744 cm^3$

MATHS [1 Mark Question Answer]