Question

8) A cylindrical tube has an outer diameter of
2.5 cm and an inner diameter of 1.5 cm. Its
coated on the outer side, the inner side and
the rims on both sides, what is the total
surface area to be covered for this purpose?
Calcul the cost if the rate is 0.50 per cm​

Answer 1

Answer:

Using long division method prove that (-1 + x⁴) is multiple of (-1 + x)