Question

FABCD is a rectangle whose area is 108 m² and its length is 12m, then the area of the square AEFC
B
a) 15 m
b) 225 m2
c) 125 m2
d) None​

Answer 1

Given :   ABCD is a rectangle whose area is 108 m² and length is 12m  

To Find : area of the square AEFC  

Solution:

Area of  rectangle = length * breadth

area = 108  m²

length = 12 m

=> 12 * breadth = 108

=>  breadth = 9 m

diagonal of rectangle  AC = √length² + breadth²

= √12² + 9²

= √225

Area of square  AEFC = AC²  =  (√225)²  = 225 m²

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