Question

The height of a cylinder is 28 cm and curved surface area is 2816 cm². Find its diameter.

Answer 1

Hey there,
Down here,⏬

☆ Given :
Height : 28 cm
CSA= 352 sq.cm

☆ CSA of Cylinder = 2 pie rh
2 pie rh = 352 sq.cm
2×22/7×r×28 = 352 sq.cm
2×22×r×4 = 352 sq.cm
176 × r = 352 sq.cm
r = 352/176 = 2 cm

☆ Diameter = 2r = 2×2 = 4 cm