Question

Find the volume of the cylinder if height (h) and radius of the base (r) are as given below.(1) r =10.5 cm, h = 8 cm (2) r = 2.5 m, h = 7 m(3) r = 4.2 cm, h = 5 cm (4) r = 5.6 cm, h = 5 cm

Answer 1

Answer:

Step-by-step explanation:

Volume of cylinder = π r² h

r = radius

h = height

π = 22/7

(1) r =10.5 cm, h = 8 cm

Volume =    (22/7)(10.5)²* 8 =  2772 cm³

(2) r =2.5 cm, h = 7 cm

Volume =    (22/7)(2.5)²* 7 = 137.5 cm³

(3) r =4.2 cm, h = 5 cm

Volume =    (22/7)(4.2)²* 5 = 277.2 cm³

(4) r =5.6 cm, h = 5 cm

Volume =    (22/7)(5.6)²* 5 = 492.8 cm³

Answer 2

Answer:

a) 2772 cm³

b) 137.5 cm³

c) 277.2 cm³

d) 492.8 cm³

Explanation:

The formula for finding the volume of a cylinder is as follows:

Volume of cylinder = π r² h

(a) r =10.5 cm, h = 8 cm

Volume = 3.14(10.5)²* 8 =  2772 cm³

(b) r =2.5 cm, h = 7 cm

Volume = 3.14(2.5)²* 7 = 137.5 cm³

(c) r =4.2 cm, h = 5 cm

Volume = 3.14(4.2)²* 5 = 277.2 cm³

(d) r =5.6 cm, h = 5 cm

Volume = 3.14(5.6)²* 5 = 492.8 cm³