Question

Dev was doing an experiment to find the radius r of a sphere. For this he took a cylindrical container with radius R = 7 cm and height 10 cm. He filled the container almost half by water as shown in the left figure. Now he dropped the yellow sphere in the container. Now he observed as shown in the right figure the water level in the container raised from A to B equal to 3.40 cm
i. What is the approximate radius of the sphere?
a. 7 cm b. 5 cm c. 4 cm d. 3 cm
ii. What is the volume of the cylinder?
a. 700 cm³ b. 500 cm³ c. 1540 cm³ d. 2000 cm³
iii. What is the volume of the sphere?
a. 700 cm³b. 600 cm³ c. 500 cm³ d. 523.8 cm³
iv. How many litres water can be filled in the full container?( Take 1 litre=1000 cm³)
a. 1.50 b. 1.44 c. 1.54 d. 2
v. What is the surface area of the sphere?
a. 314.3 m² b. 300 m² c. 400 m² d. 350 m²

Answer 1

Answer:

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