0
What is the total surface area of a solid hemisphere of radius 9cm?
Wiki User
∙ 11y ago
The surface area of a sphere is 4 x pi x r x r so in our case (since we have only half a sphere (hemisphere) the surface ares would be (0.5) x 4 x pi x 9 x 9 =162 x pi square cm. But now you have to add the area of the base because it gets exposed when youcuta sphere (to get the hemisphere) and the area of the base would be pi x r x r = pi x 9 x 9 = 81 x pi square cm. So add the two results to get 243 x pi = 763.4 square cm
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is radius of hemisphere whose total surface area is 942 cm?
The surface area of a sphere can be found with the formula 4pi * r2. Assuming the hemisphere is exactly half of a sphere, the surface area of a hemisphere can be found using the formula A = 2pi * r2 + pi * r2 Which can be written as A = pi(3r2) 942cm/pi = 3r2 314cm/pi = r2 r = 10cm (approximately) The radius of the hemisphere is approximately 10cm.
What is the difference between curved surface area of hemisphere and total surface area of hemisphere?
Curved surface area of a hemisphere means only the bent part of it , i.e,the part which looks like half of a sphere. Total surface area of a hemisphere is the circular top of a hemisphere + curved surface area of a hemisphere. So the formula goes like this: Curved surface area of hemisphere= 2πr2 Total surface area of hemisphere= 2πr2 + πr2 = 3πr2
What is the surface area of a cone with a slant height of 22 cm and radius of 7 cm?
A cone with a slant height of 22cm and radius of 7cm has a total surface area of about 637.74cm2
Why does a powdered solid have a larger surface area than a solid lump?
Each speck of the powder has a smaller surface area than the lump of solid, however the total surface area of the powder specks will be greater than that of the solid lump
What is the surface area of a right cylinder where the radius is 8 and the height is 14?
The total surface area is 1,105.84 units2The lateral surface area is 703.72 units2
What is total surface area of solid hemisphere of radius r?
It is in square units: (2*pi*radius2)+(pi*radius2)
What is the surface area in square centimeters of a hemisphere that has a radius of 14 centimeters?
Total surface area = 1847.26 sq cm.
Formula for total surface area of a hemisphere?
it is 3 times pi times r square, where r is the radius.
What is the formula for calculating surface area of a hemisphere?
The surface area of a whole sphere, of radius r, is 4*pi*r2.The area of the curved surface of a hemisphere is, therefore, 2*pi*r2.The area of the flat surface is that of a circle of radius r, that is = pi*r2.So the total surface area of a hemisphere is 2*pi*r2 + pi*r2 = 3*pi*r2.
What is radius of hemisphere whose total surface area is 942 cm?
The surface area of a sphere can be found with the formula 4pi * r2. Assuming the hemisphere is exactly half of a sphere, the surface area of a hemisphere can be found using the formula A = 2pi * r2 + pi * r2 Which can be written as A = pi(3r2) 942cm/pi = 3r2 314cm/pi = r2 r = 10cm (approximately) The radius of the hemisphere is approximately 10cm.
What is the total surface area of a hemisphere whose radius is 5 meters?
Total surface area including the base = (2*pi*52)+(pi*52) = 235.619 square metres to 3 decimal places
What is the difference between curved surface area of hemisphere and total surface area of hemisphere?
Curved surface area of a hemisphere means only the bent part of it , i.e,the part which looks like half of a sphere. Total surface area of a hemisphere is the circular top of a hemisphere + curved surface area of a hemisphere. So the formula goes like this: Curved surface area of hemisphere= 2πr2 Total surface area of hemisphere= 2πr2 + πr2 = 3πr2
What is the total surface area of a sphere when the radius is 4?
The total surface area of a sphere when the radius is 4 equals 201.1 units2
What is the formula for calculating surface area of hemispherical dished end?
The area of a sphere is 4 (pi) (radius)2. The area of 1/2 of the sphere is 2 (pi) (radius)2. If you want to add in the flat end of the hemisphere, that makes the total surface area 3 (pi) (radius)2.
What is the total surface area of a hemispherical shape with a circumference of 43.988 cm taking pi as 3.142?
Remember to include the flat surface of the hemisphere in your answer and halve the fomula of 4*pi*radius squared: Radius = 43.988/(2*3.142) = 7 cm Total surface area = (3.142*72) + (2*3.142*72) = 461.874 square cm
What is the total surface area of the Earth's crust?
The radius of the earth is 6400 km.The total surface area is 4*pi*radius square
What is the total surface area of a cylinder if the radius is 4 and height 12?
A cylinder with radius 4 and height 12 has a total surface area of 402.12 units2
