Spheres and Hemispheres - 2 MCQ

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• What will be the volume of a hemispherical bowl of radius 8 cm if it is three – fourth filled?
  ক

  256 π cm3

  খ

  236 π cm3

  গ

  286 π cm3

  ঘ

  157 π cm3
• What would be the total surface area of a hemisphere of diameter 14 cm?
  ক

  462 cm2

  খ

  426 cm2

  গ

  402 cm2

  ঘ

  492 cm2
• What would be the surface area of a sphere of radius 14 cm?
  ক

  2464 cm2

  খ

  3500 cm2

  গ

  2756 cm2

  ঘ

  3340 cm2
• What is the total surface area (in sq. cm) of a hemisphere whose curved surface area is 536 cm2?
  ক

  887

  খ

  846

  গ

  925

  ঘ

  804
• A hemispherical bowl has total surface area 99 cm2. What will be the curved surface area (in sq. cm) of five such bowls?
  ক

  342

  খ

  320

  গ

  330

  ঘ

  338
• If the radius of a sphere is tripled, then what will be the ratio of the surface area of original sphere to that of the new sphere?
  ক

  1:9

  খ

  1:3

  গ

  9:1

  ঘ

  3:1
• What will be the total surface area (in sq. cm) of a hemispherical bowl of radius 12 cm?
  ক

  1456.82

  খ

  1357.71

  গ

  1675.42

  ঘ

  1543.75
• A hemispherical bowl is made of steel, 1 cm thick. The inner radius of the bowl is 4 cm. What will be the outer curved surface area (in sq. cm) of this bowl?
  ক

  157.14

  খ

  167.15

  গ

  148.34

  ঘ

  178.92
• A sphere has a surface area of 425 cm2. What will be the diameter of this sphere?
  ক

  29.478 cm

  খ

  37.826 cm

  গ

  33.806 cm

  ঘ

  27.647 cm