I have 2 separate questions i need help with please!!

Use differentials to estimate the amount of paint needed [in m3) to apply a coat of paint 0.03 cm thick to a hemispherical dome with diameter 52 m. (Round your answer to two decimal places.) x m3 : 'nhanced Feedback 1 EPiease try again. Note that the amount (volume) of paint needed is the difference between the volumes of the hemishperes of radii I and r + dr, where d'r is the thickness of the paint. You can use the differential Eto estimate this difference in volumes. Recall that the volume of the hemishpere of radius r is given by V : 7(il'3) : nr3. After you obtain (W from this formula, you can use the given values to evaluate dill : 1e amount of painted heeded. Remember to use the same units. Find the differential of each function. (a) y = s/(8 + 55) dy = (b) y = u cos u dy =