Questions  

The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m (see Fig.). The advertisements yield an earning of ₹ 5000 per m2 per year. A company hired one of its walls for 3 months. How much rent did it pay?

The triangular side walls of a flyover have been used for advertisements. The  sides of the walls are 122m, 22m, and 120m. The advertisements yield an  earning of ₹ 5000 per m2

Moderate

Solution

Correct answer is 1

We know that, 

The Heron's formula for calculating the area of the triangle,

Area of triangle = s (s - a) (s - b) (s -c)

where, s is the semi-perimeter = half of the perimeter

and  a, b and c are the sides of the triangle 

Triangular sides of walls are, a = 122 m, b = 22 m, c = 120 m

Thus, Semi-perimeter 

s = (a + b + c)/2

= (122 + 22 + 120)/2

= 264/2

= 132 m

Area of a triangular wall = 132 (132 -122) (132-22) (132 -120)

132 × 10 × 110 × 12

= 1320 m

Given that, 

Rent of 1 m2 area per year = ₹ 5000

Rent of 1 m2 area per month = ₹ 5000/12

Rent of 1320 marea for 3 months =  (5000/12) × 3 ×1320

= ₹ 1650000

Hence, the company paid ₹ 16,50,000 as rent.

Talk to our academic expert!

+91

Please indicate your interest

Are you a Sri Chaitanya student?



Practice More Questions

Easy Questions

Moderate Questions

Difficult Questions


Download the app
brand logo

6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.

support@infinitylearn.com

1800-419-427

Sri Chaitanya College Admission Enquiries 040-66060606

Sri Chaitanya School Admission Enquiries 040-71045045 & 040-44600600 Ext 401, 402 & 425

facebook logoyoutube logotwitter logolinkedin logoinstagram logo

Quick Links

Scholarships

Study Material

Our Results

Teams

Courses

Blog

News

InfinityLearn App

playstore app

Copyright © 2023. All Rights Reserved 2023