Surface area: The lateral surface area S of a frustum (a truncated cone) is given by the f...

Surface area: The lateral surface area S of a frustum (a truncated cone) is given by the formula S = π(a + b) , where a is the radius of the upper base, b is the radius of the lower base, and h is the height. Find the surface area of a frustum where a = 6 m, b = 8 m, and h = 10 m. Answer in simplest form.