the perimeter of a rectangle is 48 cm. it's breath is 10 cm. the length of rectangle is a) 24 cm , b) 14 cm , c) 12 cm , d) 48 cm
Answers
Step by step explanation :-
Given :-
- Perimeter of rectangle is 48cm
- Breadth of rectangle is 10 cm
To find :-
Length of rectangle
Formula to know :-
Perimeter of rectangle = 2 ( l + b )
Where l is length of rectangle , b is the breadth of rectangle
___________________________
Solution :-
Let the length of rectangle is x
So, Finding the length
Perimeter of rectangle = 2 ( l + b )
48 cm = 2 ( 10cm + x )
48cm = 20cm + 2x
48cm - 20cm = 2x
28 cm = 2x
x = 28/2 cm
x = 14cm (b)
So, length of rectangle is 14cm
_________________
Know more :-
Area of square is s²
Where" s" is side of square
________________
Area of rectangle = lb
Where l = length
b = breadth
________________
Area of rhombus is 1/2 d1 d2
d1 , d2 are diagonals of rhombus
______________________
Area of circle is πr²
___________________
Perimeter of square is 4s
s is side of square
_______________
Perimeter of rectangle is 2 (l + b)
Where l = length
b = breadth
________________
Perimeter of rhombus is 4a
Where "a "is side of rhombus
_____________
Perimeter of circle is 2πr
___________________
Answer :
- Length of rectangle is 14cm.
- Option (b)
Given :
- Perimeter of rectangle is 48cm
- Breadth of rectangular is 10cm
To find :
- Length of rectangle
Solution :
As we know that,
- Perimeter of rectangle = 2(l + b)
Where, l is length, b is breadth 10cm and perimeter is 48cm
》Perimeter of rectangle = 2(length+ breadth)
》48 = 2(l + 10)
》(l + 10) = 48/2
》l + 10 = 24
》l = 24 - 10
》l = 14cm
Hence,Length of rectangle is 14cm.
Verification :
As we know that,
- Perimeter of rectangle = 2(l + b)
where l is length 14cm and b is breadth 10cm
》Perimeter of rectangle = 2(length + breadth)
》2(14 + 10)
》2(24)
》48cm