A water tank is formed with the combination of cylinder and hemisphere. The total height of the tank is 20 m and base area is 154 m. If the tank is filled with water at the rate of 45 paisa per litre, what is the total cost to fill the water? Find it.

if you was gonna solve for a, a is a   < -12

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

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step-by-step explanation: