Question

Q29 The diameter of a roller is 6 cm
and its length is 28 cm. How much
area will it cover in 7 revolutions? *
O 528 sq cm
O 3696 sq cm
07392 sq cm
O 1056 sq cm​

Answer 1

Step-by-step explanation:

Radius of roller =3

$curved \: surface \: area \: of \: roller = 2\pi \: rh$

$= 2 \times \frac{22}{7} \times 3 \times 28 = 528$

Area covered in 7 revolution=7x528=3696