Question

can anyone help me with the sums...​

Answer 1

Answer:

3. breadth = 40cm

4. Increase in area is 51 m sq.

Answer 2

Answer:

1) side of square = 45cm

Perimeter = 4a ( a = side )

P = 4 × 45 = 180cm

Perimeter of rectangle = Perimeter of square

length of rectangle = 50cm

Perimeter = 2( l + b )

180 = 2 ( 50 + b )

180/2 = 50 + b

90 = 50 + b

b = 90 - 50 = 40cm

breadth = 40cm

the second answer is given in a pic.