A Sphere of a radius of 7.86 cm is initially at a temperature of 290°C is suddenly immersed in a fluid at 15°C. The convective heat transfer coefficient is 58 W/m2k. Find the rate of change in temperature after 22.617 minutes. Take properties of sphere as ρ = 2700 kg/m3, c = 900 j/kg k, K = 205 W/mk (up to 2 decimal places)