Question

The radius of a solid hemispherical toy is 3.5cm.Its total surface area is
a) 460cm2 b)260cm2

c)360cm2 d) 560cm2


pls choose one of them correct and ans pls asap no spam but i want today

Answer 1

The radius of a solid hemispherical toy is 3.5cm.Its total surface area is

a) 460cm2 b)260cm2

c)360cm2 d) 560cm2

answer- b)260cm2

Answer 2

$\red{ \boxed{TSA(Total \:Surface \:Area)= 3 \pi r^{2}}}$

$\implies TSA = 3\pi {(3.5)}^{2}$

$\implies TSA = 3 \times 3.14 \times {(3.5)}^{2}$

$\therefore TSA = 116 {cm}^{2}$