Question

total surface area of sphere 544 cm2 find its radius

Answer 1

total surface area of sphere = 4*pi* r^2....
554 = 4 * 22/7 * r^ 2

544* 7 / 4 * 22 = r^2

43.27 = r^2

r= √43.27 = 6.57 cm..

hope this helps you

Answer 2

TSA of a sphere =
$4\pi {r}^{2}$
given that TSA of sphere is 544 cm2.
$4\pi {r }^{2} = 544$
${r}^{2} = 136 \times 7 \div 27$
${r}^{2} = 43.27$
$r = 6.57cm$
therefore the radius of the sphre having TSA 544 cm2 is 6.57 cm