Question

The curved surface area of cylinder is 1000 cm square and the radius of its base is 21 CM.Find the total surface area of the cylinder.please help me i will became brainlist.

Answer 1

Answer:

Step-by-step explanation: CSA of cyclinder = 2πrh = 1000

1000= 2×22/7×21×h

h= 7×1000÷2×22×21

h= 7.57

hence, height = 7.57cm

now, we have to find TSA of cyclinder

TSA of cyclinder = 2πr (r+h)

TSA= 2×22/7×21 (21+7.57)

TSA= 132×28.57

TSA = 3771.24cm

Answer 2

Answer:

sorry

Step-by-step explanation:

but this is a wrong answer 3,772cm^2 this is a writer answer