Question

total surface area of a well is 196 is 4cm find the curved surface area​

Answer 1

Answer:

here is your answer

height of cylinder = 4cm

we know volume of cylinder =

\pi \: r {}^{2} \: hπr

2

h

pi r^2h=196 pi

pi gets cancelled

r^2h=196

h=4

r^2=196/4=49

r= 7

curved surface area of cylinder = 2pi rh

2 ×22/7×4×7=176 cm^2

total surface area of cylinder = 2 pi r(r+h)

2*pi*r*(r+h)

484 cm^2