michellechitsaka michellechitsaka

24-09-2020
Mathematics

contestada

10. In the figure below, ABCD is a square. DEFC, BCGH and AEFB are all
rectangles. Find
(a) CF in terms of a and b.
(b) the area of rectangle CDEF

10 In the figure below ABCD is a square DEFC BCGH and AEFB are allrectangles Finda CF in terms of a and bb the area of rectangle CDEF class=

Respuesta :

shinchan69 shinchan69

24-09-2020

Answer:

a) As sides of squares are always equal.

So,

BC=CD

2b+CF=a+b

CF= a+b-2b

CF= a-b

b) Area of rectangle CDEF= CDxCF

=(a+b)(a-b)

=(a²-b²)

Hope it helps :-)

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