Question

Find the surface area of each the following figure.
(1)​

Answer 1

Answer:

figure 1) is a sphere of racius 7cm..

surface area of sphere is 4pieR^2

so the surface area will be 4 x 7 x 7 x 3.14

that comes out to be = 615.44 cm^2

figure 2) its a hemisphere so the area will be half of the area of sphere + the area of a disc like surface which is evolved due to the partition of the two halves..

so it will be (4 x 3.14 x 7 x 7) / 2 + ( 3.14 x 7 x 7)

307. 72 cm^2 + 153.86 cm^2 = 461. 58 cm^2

Step-by-step explanation:

hope it helpss

Answer 2

Answer:

1)616 sq.cm

2)308 sq.cm

Step-by-step explanation:

1) Surface area of sphere = 4πr²

=4×22/7×7²

=88×7

=616 sq.cm

2)Surface area of hemisphere=2πr²

=2×22/7×7²

=44×7

=308 sq.cm