if a 36 cm thread is used to wrap a book , lengthwise
twice and breadthwise once, what is the size of the book?
Answer Posted / aprameya shyam
let length=x... then breadth=(36-x)
since thread is used lengthwise twice & brdthwise once v
can write 4x + 2(36 - x) = 36 cm
bcoz there are 2 lengths n two 2 in a 4 sided figure(dis is
obvious)
solving v get x=-18 (ignore the -ve sign)
hence l = 36-18 = 18 & b = 18
so area=l*b = 18 * 18 = 324sqcm
| Is This Answer Correct ? | 4 Yes | 6 No |
Post New Answer View All Answers
In a club there are certain no. of males and females. If 15 females are absent then no. of males will be twice that of females. If 45 males are absent then female strength will be 5 times that of males. Find no. of males actually present.
i want rrb tc exam previous pepers
Rakesh buys 1 gallon of milk for Rs.12 and mixes it with 20% water. He then sells it for Rs.15, What is the percentage of gain that Rakesh would get.
In a lock of 4 rings there r five characters how many unsuccessful attempts can be made ?
In a company 241 apply for posts. of them 40 know neither c nor c++.180 know c; 186 knows c++. how many people know only c.
How many digits will be there to the right of the decimal point in the product of 95.75 and .02554 ?
Radha, Geeta & Revathi went for a picnic.After a few days they forgot the date,day and month on which they went to picnic.Radha said that it was on Thursday,May 8 and Geeta said that it was Thursday May 10.Revathi said Friday June 8.Now one of them told all things wrongly,others one thing wrong and the last two things wrongly.If April 1st is tuesday what is the right day,date and month?
An equilateral triangle of sides 3 inch each is given. How many equilateral triangles of side 1 inch can be formed from it?
M, N, O are jogging in the same direction around a circular track. The track is marked with numbers from 1 to 12, like the dial of a watch. The 12 numbers are uniformly spaced on the track. M overtakes N once at 5 and then the next time again at 9. M overtakes O once at 2 and then the next time again at 4. Find the ratio of N's speed to O's speed?
In a class photograph, 5 girls are sitting in the front where as 20 boys are standing behind them. The corner two positions are reserved for the tallest boys of the class. What are the number of ways the students may be arranged?
Instead of multiplying a number by 7, the number is divided by 7. What is the percentage of error obtained?
There are 600 tennis players 4% wear wrist band on one wrist Of the remaining, 25% wear wrist bands on both hands How many players don't wear a wrist band?
If the area of square increases by 69% then side of the square increment by:
The cost of one pencil, two pens and four erasers is Rs.22 while the cost of five pencils, four pens and two erasers is Rs.32.How much will three pencils, three pens and three erasers cost?
6 people A,B,C,D,E and F sit around a table for dinner. Since A does not like C, he doesn't sit either opposite or beside C.B and F always like to sit opposite each other. If A is beside F then who is are the two neighbours of B?