Question

1) Find the perimeter and area of rectangle whose side are length 700 CM breath 500 CM.

2) find the perimeter and area of a square whose sides -: (a)side=21 CM
(b)side= 3m 50cm.

3) find the area of a rectangle whose perimeter is 320m and 90m of length.

4) find the length of a rectangle if rectangle having area 6400 sq cm and breadth 40cm.​

Answer 1

Step-by-step explanation:

1.)perimeter of rectangle=2(l+b)

=2(700+500)

=2(1200)

=2400cm

2.) perimeter of square = 4×sides

(a) side=21cm

4×21cm

84cm

(b) side=3m 50cm

converting 3m into cm

=300cm+50cm

=350cm

=350×4

=1400cm

3.) given:perimeter =320m and length=90m

permeter= 2(l+b)

320=2(90+b)

320=180+b

transposing 180 to left hand side,

320-180=b

140=b

breadth= 140m