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20m : 70m = Rs 8 : Rs ______.

Answer:

20m : 70m = Rs 8 : Rs 28.

Let us assume the missing number be P.

Then, 20m : 70m = ₹ 8 : ₹ P

20/70 = 8/p

P = (70 × 8)/20

P = 560/20

P = 56/2

P = 28

Therefore, 20m : 70m = Rs 8 : Rs 28.

"hello students welcome to lido q a video
session i am saf your math tutor
and question for today is the radius of
the cone is 5 centimeter
its vertical height is 12 centimeter
find the area of the curved surface
to find the area of the curve surface we
have been given certain data
that is the radius of the cone
that is r and that is given is 5
centimeter
height of the cone
that is h and that is 12 centimeter and
the slant height
l that we need to find
to find slant height we know
l square is equal to h
square plus r square
so l square will be equal to 5
square or first you can write height
that is 12 square plus 5 square
and then you have 144
plus 25 and that is 169
that is your l square hence taking root
on both the sides you will get
l is equal to 1 3 13 that is your
slant height that is 13 centimeter
now curved surface area of a cone can be
given by
formula which is pi r l
okay
take pis 3.14 radius
that is given 5 centimeter and
slant height we have found to be 13
centimeter
so here we have car surface area as
204.28
centimeter square therefore
we can finally write our statement that
curved surface area of a cone
will be equal to 204.28
centimeter square and that is our final
answer
if you have any doubt you can post it in
our comment section
and subscribe to leto for more such
interesting q a
thank you for watching
"

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