Question

Find the curved surface area of a sphere with radius 7 cm.​

Answer 1

Step-by-step explanation:

$\sf \purple{ \clubs \:Given : } \\ \sf \: Radius \: of \: sphere = 7 \:cm\\ \sf \purple{ \clubs \:To \: find : } \\ \sf \: Curved \: Surface \: Area \: of \: Sphere \\\sf \purple{ \clubs \:Formula \: used : } \\ \sf \: Curved \: Surface \: Area \: of \: Sphere = 4\pi {r}^{2} \\ \sf \purple{ \clubs \: Solution: } \\ \sf \: Curved \: Surface \: Area \: of \: Sphere = 4\pi {r}^{2} \\ \sf \: where \: \pi = \frac{22}{7} \: and \: r = 7 \: cm \\ \sf \: Curved \: Surface \: Area \: of \: Sphere = 4 \times \frac{22}{7} \times ( {7})^{2} \\ \sf \: Curved \: Surface \: Area \: of \: Sphere = 4 \times \frac{22}{ \cancel7} \times \cancel{49} \: \: _7 \\ \sf \: Curved \: Surface \: Area \: of \: Sphere = 88 \times 7 \\ \sf \: Curved \: Surface \: Area \: of \: Sphere = 616 \: {cm}^{2} \\ \sf \: \red{Which \: is \: the \: required} \\ \sf \: \red{Answer \: .}$