Question

2. Find the breadth of the rectangle whose
perimeter is 180 cm and length is
(b) 70 cm (c) 51 cm.
(a) 58 cm​

Answer 1

Perimeter of rectangle =2(l+b)

180=2(70+b)

180=140+2b

180-140=2b

40=2b

40/2=b

20=b answer

perimeter of rectangle - 2(l+b)

180=2(51+b)

180=102+2b

180-102=2b

78=2b

78/2=b

39=b