8.
The total surface area of a solid cylinder with radius 7cm and height 13cm is
A) 880cm2 B) 660cm2
C) 440cm2
D) 110cm
8x1=
II. Answer the following questions:
9. Write the formula to find the sum of first 'n' natural numbers.
10. In the fig. DE||BC and AD : BD = 1 : 2 find
ar(AADE)
ar(AABE)
1.
Find the area quadrant of a circle whose radius is 4cm.
Answers
Answered by
2
Answer:
sum of all natural no. is n(n+1) /2
ok
area of quadrant is πr^2/4
=4π
ok
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Answered by
0
Answer:
a 880cmm2 this is total surface area of a solid cylinder
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