Question

The area of rhombus if its vertices are (3, 0), (4, 5), (-1, 4) and (-2, -1) taken in order is
a. 24 sq. units
b. 23 sq. units
c. 25 sq. units
d. 22 sq. units

ALIGARH MUSLIM UNIVERSITY +2 ENTRANCE TEST PAPER 2013-14

Answer 1

OPTION NUMBER A ,,



HERE I HAD USE MATERIX RULE ,,




FIRST OF ALL I HAVE FIND AREA OF A TRAINGLE BY DRAWING A DAIGONAL .






THEN I FIND AREA BY MATERIX RULE .




THEN I HAD MULTIPLY BY 2 BECAUSE ,,



TRAINGLE ARE DIVIDED INTO EQUAL HALVES .




NOW ,,, ON MULTIPLYING BY 2 YOU WILL GET AREA => 24 CM square .





HOPE IT IS CLEAR AND HELPFUL !!!!



THANKS

Answer 2

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