Question

find the curved surface area and total surface area of a cylinder with the following dimensions diameter of the base = 21 m and height = 7 m

Answer 1

Answer:

147

Step-by-step explanation:

we know surface area of silider = [base /times hight]

=21 /times7= 147

Answer 2

$TSA \ OF \ CYLINDER \ = 2\pi r(r+h)\\\\DIAMETER = 21 \ m \\\\RADIUS = 21/2\\\\TSA = 2 * 22/7 *21/2 (21/2 + 7)\\\\=> 1155 \ cm^2\\\\CSA \ OF\ CYLINDER = 2\pi rh\\\\CSA = 2 * 22/7 * 21/2 * 7 => 462 cm \ ^2\\\\hope \ it \ helps\ !!$