The length of a rectangle is (3x+2) units and its breadth is (3x- 2)units.find the area in terms of x. What will be the area if x = 10 units.
Answers
Answered by
2
Step-by-step explanation:
lenght =3x+2
breadth=3x-2
(a+b)(a-b)=a²-b²
area of rectangle =length *breadth
=(3x+2)(3x-2)
=9x²-4
given x=10
area of rectangle is= 9*10²-2
=900-4=896
Answered by
0
given
l=3x+2
b=3x-2
using formula
a^2-b^2
area of rectangle=l×b
={3x+2}*{3x-2}
=9x^2-4
x=10
9*10^2-4
900-4
896
Step-by-step explanation:
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