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RRB Paramedical Staff Nurse Model Paper 10
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© examsnet.com
Question : 49
Total: 100
The base of a right prism is an equilateral triangle of area 173 Sq. cm and the volume of the prism is 10380 cube.cm. The area of the lateral surface of the prism is- (use
√
3
=
1.73
)
1200 Sq. cm
2400 Sq. cm
3600 Sq. cm
4380 Sq. cm
Validate
Solution:
Area of base of prism
=
173
c
m
2
√
3
4
a
2
=
173
⇒
a
2
=
173
×
4
1.73
=
400
c
m
2
So side of base of prism
√
400
=
20
c
m
Perimeter of base of prism
=
20
×
3
=
60
c
m
Volume of prism
=
10
,
380
c
m
3
(Given) Height
=
Volume
Area
=
10
,
380
173
=
60
c
m
So Lateral surface area of prism
=
60
×
60
=
3600
sq.cm
© examsnet.com
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