Question

Find the cost of colour/paint made on a pencil of length 14 cm and radius 3.5mm at the rate 2 rupees for

1 sq.cm​

Answer 1

Answer:

10.78 rs

Step-by-step explanation:

length (l)= 14 cm

radius (r)= 3.5 mm = 0.35 cm

so

area = 22/7 × r×r× l

= 22/7× .35×.35×14

= 5.39

so cost = 5.39× 2

= 10.78 rs