Question

blacksmith have big iron ball of diameter
36cm. He first formed four identical
cylindrical rod out of this ball for some
construction work. When he finished his
work with the cylindrical rod, he again
mixed all the iron rod and formed some
identical small balls, each of radius 9cm.

a) If the diameter of each cylinder

formed by him is 12cm, then height

of each of them is-

(a) 54cm

(b) 36cm

(c) 45cm
(d) 72cm

b) The number of small balls formed by the

blacksmith?

(a) 6

(b) 10

(c) 8

(d) 16

What is the cost price of steel coating of a
cylindrical iron rod at the rate of Rs.3.5per
100cm^2?

(a) Rs.79.20

(b) Rs.89.20

(c) Rs.85.56

(d) Rs.71.28​

Answer 1

Answer:

a) option B

b) option C is the correct answer

Answer 2

Answer:

i have one confusion we have only two chance to give its exam ,first change in 6th class and 2nd chance in 9th class.

one side your are saying that you were selected in 6th class and 2nd side you are saying that you were selected in 2nd chance

you are selected in 6th class or 9th class?

please clarify.

btw in which class you are?

what's your name??

you can answer in any of my question if space is blank or you can report any answer if needed and then you could answer.