Geometry

calculate the surface area of a hemisphere with the radius 10 ft

  1. 👍 0
  2. 👎 0
  3. 👁 35
asked by Mary
  1. SA = 2 * pi * r^2

    SA = 2 * 3.14 * 10^2
    SA = 6.28 * 100
    SA = 628 sq. ft.

    http://mathcentral.uregina.ca/QQ/database/QQ.09.07/h/nicholas4.html

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    What is the surface area and volume of a composite figure made up of a hemisphere and a cone in terms of pi? The radius is 10, and the slant height is 15. Are my answers right? Cone surface area: π(10)(15) = 150π Hemisphere

    asked by Anonymous on May 26, 2015
  2. maths

    A Toy is in the form of a hemisphere surmounted by a right circular cone of the same base radius as that of the hemisphere .If the radius of base of the cone is 21 cm and its volume is 2/3 of the volume of hemisphere calculate the

    asked by simran on December 4, 2012
  3. geometry

    A cone is topped with a hemisphere. Calculate the total surface area if the radius of the cone and hemisphere is 10 cm and the height of the cone is 24 cm.

    asked by JOY on May 12, 2011
  4. math

    A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice

    asked by Lucas on April 28, 2014
  5. math

    If you are calculating surface area of a right circular cone topped with a hemisphere. the radius is 4 cm and the rt angle is 8 cm...what is the lateral surface area. Is it 8.94 or is it 9? Explain answer please. Thanks

    asked by trey on March 16, 2012
  6. maths-surface area

    A solid is in the form of cone mounted on a hemisphere in such a way that the centre of the base of the cone just coincide with the centre of the base of the hemisphere. Slant height of the cone is L and radius of the base of the

    asked by anoynomous on March 17, 2013
  7. Math

    The surface area of this hemisphere is 1062 cm^2. what is its radius? please help me calculate this step by step

    asked by Albert Einstein on May 31, 2015
  8. Physics

    A particle is at rest at the apex A of a smooth fixed hemisphere whose base is horizontal. The hemisphere has centre O and radius a. The particle is then displaced very slightly from rest and moves on the surface of the

    asked by Chris on February 4, 2012
  9. lesiba

    why is the surface area of hemisphere equal to 3pie radius squared

    asked by nthabiseng on July 25, 2015
  10. physics

    A block of ice of mass m rests on the very top of a smooth metal hemishpere. The tiniest nudge sends it sliding down the side of the hemisphere. The acceleration of gravity is g and the radius of the hemisphere is R. At what

    asked by ap on February 6, 2013

More Similar Questions