25 circular plates each of radius 10 5cm and thickness 1 6 cm are placed one above the other to form...........

Quantitative Aptitude ( CCS) Mensuration 3D

25 circular plates each of radius 10.5cm and thickness 1.6 cm are placed one above the other to form a solid circular cylinder. Find the curved surface area and volume of the cylinder so formed.

2250 cm²

3540 cm²

1640 cm²

2640 cm²

छोटे Courses बड़े Results

Master Mensuration 3D

Prepare through Micro-courses

Try Now

Explanation:

Given that 250 circular plates each with radius 10.5 cm
Thickness is 1.6 cm.
Since plates are placed one above the other so its height becomes =1.6*25 =40 cm
Volume of the cylinder = ∏r²h
= ∏10.5²×40 =13860 cm³
Curved surface area of a cylinder = 2∏r×h
= 2∏10.5×40 = 2640cm²
Volume of the cylinder is 13860 cm³
Curved surface area of the cylinder is 2640 cm²