Question

if lateral surface area of a cylinder is 94.2cm square and its height is 5cm then find i .radius of its base ii.its volume (use pie = 3.4)
please answer step by step
plese no irrivallent answers​

Answer 1

Answer:

Here, h = 5 cm, 2πrh = 94.2 cm2. Hence, base radius of the cylinder = 3 cm

Here, h = 5 cm, 2πrh = 94.2 cm2. (i) 2πrh = 94.2 ⇒ 2 × 3.14 × r × 5 = 94.2 ⇒ r = 94. 2/ 2x 3.14x 5 = 3 Hence, base radius of the cylinder = 3 cm Ans. (ii) Volume of the cylinder = π r2h = 3.14 × 3 × 3 × 5 cm3 = 141.3 cm3 AnsRead more on Sarthaks.com - https://www.sarthaks.com/12180/the-lateral-surface-cylinder-cm2-and-its-height-then-find-radius-its-base-ii-its-volume-use

Answer 2

Answer:

Given,

h = 5cm

⇒Let radius = r

(i) Curved Surface Area

⇒94.2cm² = 2πrh

⇒94.2 cm² =2 × 3.14 × r × 5cm

⇒r = 3cm

(ii) Volume of cylinder

⇒πr²h = 3.14 × 3 × 3 × 5 = 141.2cm³