, the floor of a rectangular …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

, the floor of a rectangular hall has a perimeter 250m if the cost of the painting the four walls rupees 10 per metre square is Rupees 1500 find the height of the hall

Posted by Keshav Deshmukh 5 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 10 months ago

Given: Perimeter of rectangular wall = $2\left( l+b \right)$ = 250 m ……….(i)
Now Area of the four walls of the room
= $\frac{\text{Total cost to paint walls of the room}}{\text{Cost to paint 1 }{{\text{m}}^{2}}\text{ of the walls}}$
= $\frac{15000}{10} = 1500 {{m}^{2}}$ ……….(ii)
$\because$ Area of the four walls = Lateral surface area = $2\left( bh+hl \right)$ = $2h\left( b+l \right)$ = 1500
$\Rightarrow$ $250\times h=1500$ [using eq. (i) and (ii)
$\Rightarrow$ $h=\frac{1500}{250}$ = 6 m
Hence required height of the hall is 6 m.

1Thank You

ANSWER

Related Questions

What is 38747484±393884747

Posted by Alvin Thomas 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

3√2×4√2×12√32

Posted by Manas Khurana 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

Prove that the sum of all the three interior angles of a triangle is 180 degree

Posted by Savitha Savitha 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

Cost of a pen is two and half times the cost of a pencil. Express the situation as a linear equation in two variables

Posted by Kirshika Ganesh 1 month, 3 weeks ago

CBSE > Class 09 > Mathematics

0 answers

2x+5y

Posted by Yash Pandey 1 month, 1 week ago

CBSE > Class 09 > Mathematics

0 answers

sides of a triangle are in the ratio of 12:17:25 and its perimeter is 540cm. find its area

Posted by Akhilesh Patidar 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

The polynomial of the type ax²+bx+c,a=0 is called

Posted by Gnani Yogi 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

Ch-1 introduction

Posted by Sheikh Alfaz 3 months ago

CBSE > Class 09 > Mathematics

0 answers

X³-12x²+39x-28

Posted by Sukhi Devasi 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by T Prudhvi 5 months, 4 weeks ago

CBSE > Class 09 > Mathematics