Question

find the area of rectangle having side 4 cm and diagnol 5 cm​

Answer 1

Answer:

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the answer is 12sq cm

Step-by-step explanation:

refer to attachment

Answer 2

Step-by-step explanation:

a side of rectangle is given and it's diagonal as well

length=4 and diagonal=5

we can apply pythagorous theorm:

(length)^2+ (breadth)^2=(diagonal)^2

now, putting the values:

(4)^2+(b)^2=(5)^2

16+ (b)^2= 25

(b)^2=9

therefore,b=3

now area of rectangle= lxb

=4x3=12cm^2