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Subject :IMO    Class : Class 7

ABCD is a rectangle. E and F are midpoints of AB and CB respectively. If the area of the shaded ΔAEF is 7 cm2, then the area of rectangle ABCD, is____ .


A28 cm2
B49 cm2
C35 cm2
D56 cm2


Ans 1:

Class : Class 9

Ans 2:

Class : Class 9

Ans 3:

Class : Class 8
Pls Answer

Ans 4:

Class : Class 9
How do we do it

Ans 5:

Class : Class 7
area of triangle = 1⁄2 × (Base) × (Height)= 1⁄2 × (2x) × (y)(1) (2) = 1⁄2 × (2x) × (y) = xy(1) = 1⁄2 xyxy⁄2 7 = xyxy = 14Area of ABCD = (2x) × (2y) = 4xy4 × 14 = 56 cm2

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