ICSE − Q & A

A toy is in shape of right circular cylinder with hemisphere on one end and cone on other . The height and diameter of cylinder is 12cm and 4.2 cm.
The radii of hemisphere and cone are same.
Calculate surface area of toy if height of cone is 7 cm.

How many of you think that these holidays will go in vain if we commit a silly mistake in the boards????

SELINA: Pg 435 Q 6 (c):Im getting the slant ht. of the cone in roots
Pg  435 Q 6(b):Is the ans given at the back wrong?for A intersection B
Pg 440 Q 11(C):Again i got  0.9 and -1.9 for this pls clarify
Thnx!!!!

Aajkal hindi mai likhne ka yeh kya naya fashion nikal gaya hai ki jab dekho koi na koi hindi mai baat kar raha hai . Ispar aapki raay bataye. (Pls don't mind).lol!. Newj reporter restak

"completing the book" ,does this mean doing each sum of each exercise. In 8-9 days did u all completed whole book?

Do we have to do all reflection sums on graph ppr or directly write ans on answer sheet... When it is not specified in the ques ppr

Tip :-
Redraw the geometry and mensuration figures (if u want 80)
in sums of algebra where unknown quantities are needed to be found out , after finding the value substitute and cross-check
avoid commercial maths sums
don't forget to write the scale and ques no on your graph paper....
will post more later

The marked price of an article is rs.9200 and the sales tax levied on it is 8%. A customer asks the trader to give this article for rs.9000 or less as he has only rs.9000 with him.The trader charged rs.8856 only including sales tax.Find the discount given by the trader.

*During maths tests, choose 'prove that' type problems as much as possible. Because there is no need of re-checking these problems, and you can be sure that you've written the correct answer.

*Most of the maths problems have more than one solving methods. While re-checking such problems, always check using alternative methods, not using the same method you used. Check whether both the answers are same. This way, you can detect careless mistakes.

Came across this in Quora. Thought it might help

Hi guys I had a doubt. 
In construction of hexagon 
Both the methods are accepted by the board or not.?
Thanks in advance! 
I