Question

17. The perimeter of a rectangular field is 240 m. If its length is 90 m
find: (i) it's breadth
(i) it's area​

Answer 1

Step-by-step explanation:

perimeter = 2(l+b)

240= 2(90+ b)

240= 180+b

b = 240- 180

b = 60

area of rectangle = l × b

= 90×60

= 5400

Answer 2

Answer:

• Breathe is 30m
• Area of rectangle is 2700m².

Step-by-step explanation:

$\huge\tt\red{ | Given \: that:- | \gamma }$

• The perimeter of a rectangular field is 240m. if it's length is 90m.

To find:

• it's breadth
• and it's area

Solution:-

the perimeter of rectangle= 240m

length= 90m

first find the breadth of rectangle:-

=> using formula:-

perimeter of rectangle= 2(l+b)

240= 2( 90 + b)

240= 180 + 2b

2b= 180-240

2b= 60

b= 60÷2

B= 30

==> hence the breadth of the rectangle is 30m

now find the area of rectangle:-

using formula:-

area of rectangle= (l×b)

length= 90m

breadth=30m

let's find area of rectangle:-

= 90 × 30

= 2700

hence area of rectangle is 2700m²

___________________________________

BREADTH= 30m

AREA OF RECTANGLE= 2700m²

${}^{i \: hope \: its \: help \: you.}$