Question

the volume of a cylinder is 3520 m. its height is 7cm. find it's l.s.a and t.s.a

Answer 1

volume. of cylinder=3520
2×22/7×r²×h=3520
2×22/7×r²×7=3520
44×r²=3520
r²=3520/44
r²=80
r=4root5
sa of cylinder =2*22/7*4root5*7
=44*4root5
=176root5
tsa of cylinder =2*22/7*4root5(4root5+7)
=44*4root5/7(7+4root5)
=176root5/7(7+4root5

Answer 2

Step-by-step explanation:

volume. of cylinder=3520

2×22/7×r²×h=3520

2×22/7×r²×7=3520

44×r²=3520

r²=3520/44

r²=80

r=4root5

sa of cylinder =2*22/7*4root5*7

=44*4root5

=176root5

tsa of cylinder =2*22/7*4root5(4root5+7)

=44*4root5/7(7+4root5)

=176root5/7(7+4root5