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3 years ago

Find the surface area of the closed hemisphere

Mathematics

2 answers:

V125BC [204]3 years ago

8 0

Diameter = 8 yards so the Radius = 4 yards:

Area of a sphere = 4π.R² and hemisphere = 2π.R²

Area of hemisphere = 2.π.(4)² = 32.π
But note we didn't calculate yet the are that closes this hemisphere:
Area of the cicle = π.R² = π.(4)² = 16.π, so the surface area of the hemisphere is 32π + 16π = 48.π (Or =150.8 yard²)

lina2011 [118]3 years ago

3 0

Its about 100.530964915.

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Answer:

Step-by-step explanation:

given:

the scale from a square park to a drawing of the park is 5 m to 1 cm

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