Question

Find the TSA of A Hemisphere With Base Diameter 7cm.

Answer 1

Answer:

The TSA of Hemisphere is 115.5 cm²

Step-by-step explanation:

Diameter= 7

Radius = ⁷/2

TSA of Hemisphere= 3πr²

=$3 \times \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2}$

$3 \times 11 \times \frac{7}{2}$

$33 \times \frac{7}{2}$

$\frac{231}{2}$

115.5 cm²

Answer 2

Answer:

462 cm^2

Step-by-step explanation:

TSA of a hemisphere = 3*π*r

radius = 7 cm

TSA = 3*22/7*7*7 = 3*22*7 (7 of π & one 7 gets cancelled)

                             = 462 cm^2