Answer:
total surface area = 672 cm^2
Step-by-step explanation:
radius of hemisphere, r = 7 cm
radius of base of cone, r = 7 cm
height of cone, h = 22-7 = 15 cm
slant length of cone, L = sqrt(7^2+15^2) = sqrt(274)
Area of the cone
= pi r L
= pi * 7 * sqrt(274)
= 115.87 pi
= 364.02 cm^2
Area of hemisphere
= 2 pi r^2
= 2 pi * 7^2
= 307.88 cm^2
Total surface area = 364.02 + 307.88 = 671.89 cm^2
