Question

guys plz help me in solving this

Answer 1

hey mate here is the Attachment..In which Your answer is..Written..(Ignore The cuts -_-)

Answer 2

Answer:- (i)21 cm

(ii)34650 cm³

Explanation by steps:-

(i) Let the radius be r

We know that circumference of a circle is found by 2 × π × radius

So, we can put:-

2πr = 132 cm

=> 2 × 22/7 × r = 132 cm

[ π = 22/7 given in question]

=> r = (132×7) / (2 × 22)

= 3 × 7 [ on bringing to lowest term]

= 21 cm

(ii) Volume of a cylinder = Area of its base × its height

We know that its base is a circle and area if a circle = π × radius²

So , we can put,

V [of cylinder] = πr²h

= 22/7 × 21² × 25 cm³

= 22/7 × 21 × 21 × 25 cm³

= 22 × 3 × 21 × 25 cm³

[ on bringing to lowest term]

= 34650 cm³

Hope it helps (^_^)