Tanisha Pal Singh
1st block
1st May 2019
Formula for surface area of Prism is L + 2B, where L is lateral area which we can get by multiplying P and h( perimeter and height) and and B is the area of base. Surface area of cylinder is 2× pie× r× height + 2× pie× r^2, where r is radius and h is height of cylinder. Lateral area of pyramids is 1÷2 × P× l, where L is slant height and P is perimeter. The lateral area of cone is pie× r× l and surface area is pie× r× l+ pie× r^2), where r is radius and l is slant height. I feel the hardest to solve is prisms and easiest is pyramids.
Tanisha Singh Geometry Blog 