a box contains 20 slip numbered from 1 to 20 and another box contains 30 slip numbered from 1 to 30 . 1 slip is taken from each box. a) in how many different ways we can select a pair of slips,one from each box? b) what is the probability of both being even? c) what is the probability of getting an even number and odd number? d) what is the probability of getting atleast an even number ?
Answers
Answer:
Given :
Circumference of the base of Cylinder is 88 cm .
Height is 5 cm .
To Find :
Curved Surface Area of Cylinder .
Solution :
Firstly we will find the Radius of Cylinder :
Using Formula :
\longmapsto\tt\boxed{Circumference\:of\:Circle=2\pi{r}}⟼
CircumferenceofCircle=2πr
Putting Values :
\longmapsto\tt{88=2\times\dfrac{22}{7}\times{r}}⟼88=2×
7
22
×r
\longmapsto\tt{88\times{7}=44\:r}⟼88×7=44r
\longmapsto\tt{616=44\:r}⟼616=44r
\longmapsto\tt{r=\cancel\dfrac{616}{44}}⟼r=
44
616
\longmapsto\tt\bf{r=14\:cm}⟼r=14cm
Now ,
For Curved Surface Area :
Using Formula :
\longmapsto\tt\boxed{C.S.A\:of\:Cylinder=2\pi{rh}}⟼
C.S.AofCylinder=2πrh
Putting Values :
\longmapsto\tt{2\times\dfrac{22}{{\cancel{7}}}\times{{\cancel{14}}}\times{5}}⟼2×
7
22
×
14
×5
\longmapsto\tt{44\times{2}\times{5}}⟼44×2×5
\longmapsto\tt{88\times{5}}⟼88×5
\longmapsto\tt\bf{440\:{cm}^{2}}⟼440cm
2
So , The C.S.A of Cylinder is 440 cm² .
Step-by-step explanation:
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