a schol organized a competition of making and decorating pen holder in the shape of cylinder by making its base and its curved surface areawith cardboars.each pen holder is supposed to have radius of 3.5 cm and height 10 cm how much cardboard does the school need if 30 students are participating in the competion ?
Answers
Given : pen holder in the shape of cylinder by making its base and its curved surface area with cardboard
each pen holder is supposed to have a radius of 3.5 cm and height 10 cm
To Find : how much cardboard does the school need if 30 students are participating in the competition
Solution:
radius = 3.5 cm
height = 10 cm
Base area = πR²
= (22/7)(3.5)²
= (22/7)(3.5)²
= 38.5 cm²
curved surface area = 2πRh
= 2(22/7)(3.5)10
= 220 cm²
cardboard required for one pen holder = 38.5 + 220
= 258.5 cm²
30 students are participating in the competition
Hence Total card board required = 30 * 258.5
= 7755 cm²
Learn More:
The altitude of a circular cylinder is increased six times and the base ...
brainly.in/question/15912085
The curved surface area of a cylinder is 176cm² and it's height is ...
brainly.in/question/14053813
Answer:
this is the correct solution
