Question

Find the area of sheet required to make 10 Joker Caps of radius 7 cm and height 24 cm.
OR
A cubical water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it
hold? (1 m3 = 1000 litres)
4.5 cm
5 cm
6 cm
TI
.
1
C:​

Answer 1

Answer:

r=7

h=24

$l = \sqrt{ {h}^{2}+ {r}^{2} } \\ = \sqrt{ {24}^{2} + {7}^{2} } \\ = \sqrt{576 + 49} \\ = \sqrt{625} = 25$

$CSA \: of \: cone = \pi \times r \times l \\ = \frac{22}{7 } \times 7 \times 25 \\ = 600 \: {cm}^{2}$

area of 10 joker caps =600*10=6000cm²

or

l=6 , b=5, h=4.5

volume=lxbxh

=6x5x4.5

=135m³

=135x1000

=135000litres