The radius of a sphere is 3.5 cm. What is the total surface area of the sphere?

154 cm2 77 cm2 231 cm2 188 cm2

154 cm2

We know that, The total surface area of a sphere = 4πr2. Radius of a sphere = 3.5 cm Total surface area = 4 × \(\frac{22}{7}\) × (3.5)2 = 154 cm2