Please help me by solving this question
A lateral side of an isosceles triangle is 15cm and the altitude is 8 cm . what is the radius of the circumscribed circle?????
@prags03 said:Please help me by solving this questionA lateral side of an isosceles triangle is 15cm and the altitude is 8 cm . what is the radius of the circumscribed circle?????
1/3*8 ??
@prags03 said:Please help me by solving this questionA lateral side of an isosceles triangle is 15cm and the altitude is 8 cm . what is the radius of the circumscribed circle?????
225/16 ?
@viewpt said:1/3*8 ??
@prags03 said:@viewpt No the answer given in the book is 9.375
my mistake 1/3*8 is inradius
For the circumradius its 2*8/3
For the circumradius its 2*8/3
@prags03 said:@viewpt No the answer given in the book is 9.375
bhai ,this ans seems to be wrong.. in isosceles triangle the altitude is always perpendicular to the base. and then 2/3*8 will be the circumradius na??
Hi there. Someone please help me out with this question from pnc:
A party is arranged for 2M people along two sides of a long table with M chairs on each side. R men wish to sit on one particular side and S on the other. In how many ways they can be seated?
A party is arranged for 2M people along two sides of a long table with M chairs on each side. R men wish to sit on one particular side and S on the other. In how many ways they can be seated?
@imrover said:Hi there. Someone please help me out with this question from pnc:A party is arranged for 2M people along two sides of a long table with M chairs on each side. R men wish to sit on one particular side and S on the other. In how many ways they can be seated?
hope M>R
M>S
MCR*MCS *2 S! *R!
can you please tell me the short cut to solve this question?
the average price of 80 computers is rs. 30,000. if the highest and lowest price computers are sold out then the average price of the remaining 78 computers is rs. 29,500. the cost of highest price computer is rs. 80,000. the cost of lowest price computer is ?
the average price of 80 computers is rs. 30,000. if the highest and lowest price computers are sold out then the average price of the remaining 78 computers is rs. 29,500. the cost of highest price computer is rs. 80,000. the cost of lowest price computer is ?
@sur17 said:can you please tell me the short cut to solve this question?the average price of 80 computers is rs. 30,000. if the highest and lowest price computers are sold out then the average price of the remaining 78 computers is rs. 29,500. the cost of highest price computer is rs. 80,000. the cost of lowest price computer is ?
80*30000 - 78*29500 - 80000 is the answer
thnx for the short cut,... bt hw 2 cal 78*29500 quickly?
there are 5 bulbs of different colour ..in how many ways a room can be lightened
@nikhil64 said:there are 5 bulbs of different colour ..in how many ways a room can be lightened
It's 2^5-1.
You can solve it by taking the cases of 1 bulb and 2 bulbs.:)
A team of miners planned to mine 1800 tons of ore during a certain number of days.Due to technical difficulties in one-third of the planned number of days,the team was able to achieve an output of 20 tons of ore less than the planned output.To make up for this,the team overachieved for the rest of the days by 20 tons.The end result was that the team completed the task one day ahead of time.How many tons of ore did the team initially plan to ore per day?
options
1.50 2.100 3.150 4.200 5.250
I am not getting this question.please help.
Also,I am having trouble solving all questions of LOD 3.Is it ok to leave out few LOD 3 questions?
@ShipraP said:A team of miners planned to mine 1800 tons of ore during a certain number of days.Due to technical difficulties in one-third of the planned number of days,the team was able to achieve an output of 20 tons of ore less than the planned output.To make up for this,the team overachieved for the rest of the days by 20 tons.The end result was that the team completed the task one day ahead of time.How many tons of ore did the team initially plan to ore per day?options1.50 2.100 3.150 4.200 5.250I am not getting this question.please help.Also,I am having trouble solving all questions of LOD 3.Is it ok to leave out few LOD 3 questions?
(1800/d -20)d/3 +(1800/d + 20)(2d/3 -1)=1800
600-20d/3 +1200-1800/d +40d/3 -20=1800
20d/3 -1800/d=20
d/3 -90/d=1
d^2-270=3d
d^2-3d-270=0
d=3+33/2=18
1800/18=100
when will we start with Log and PndC ??
and i want to start again with probability!!!
@ShipraP let number of planned days be x
work per day be w
wx=1800
(w-20)x/3+(w+20)2x/3=1800+w+20
20x=3w+60
36000=3w^2+60w
on solving,
w=-120 or w=100
as work done is positive,
w=100 tonnes
work per day be w
wx=1800
(w-20)x/3+(w+20)2x/3=1800+w+20
20x=3w+60
36000=3w^2+60w
on solving,
w=-120 or w=100
as work done is positive,
w=100 tonnes
No donot leave any question...... complete one book but complete it thoroughly.
@starknainan09 Its random if u have ur questions post them here or in the official quant thread. But donot post the same question on both the threads 😃