Question
When the breadth of a rectangle is reduced by 4cm
(keeping the length constant), its area reduces by 72 cm2 and when the length is reduced by 4cm (keeping the length constant), its area reduces by 64cm2. What is the perimeter of the rectangle? (in cm)Solution
Let the length of the rectangle be l cm and breadth be b cm Area = lb Case 1 - Length = l and Breadth = b - 4 Area = l(b - 4) = lb - 4l So, lb - {lb - 4l} = 72 4l = 72, therefore l = 18 cm Case 2 - Length = (l - 4) and Breadth = b Area = (l - 4)b = lb - 4b So, lb - {lb - 4b} = 64 4b = 64, therefore b = 16 cm Now, Perimeter = 2 (l + b) = 2 (18 + 16) = 2 x 34 = 68 cm
The FAME-II scheme is designed to provide incentives to manufacturers for the production of electric vehicles (EVs) and to promote the development of n...
Which term refers to the security risk associated with public charging ports?
______ bank and Niti Aayog have collaborated up to work together to facilitate a program for faster and easier financing of electric vehicles (EV).
How many housing finance companies are included in the upper layer under scale based regulation for NBFCs for the year 2023-24 according to the Reserve ...
India ended the Asian Rowing Championship 2021 with how many medals in total?
Which is the most powerful piece in a game of chess?
Which of the following is the CORRECT statement for the Kishor category under the Pradhan Mantri Mudra Yojana?
Which of the following Indian philosophical systems and its widely acknowledged proponents is INCORRECTLY paired?Â
Which of the following is India's first speaking movie?
Which of the following entities shall not be eligible to participate in the Call, Notice and Term Money Markets, both as borrowers and lenders –:
Relevant for Exams:
