Question

area of a square is 81 sq CM the same length of wire used for square turned into other angle is length of the rectangle is 10 cm find out the area

Answer 1

Answer:

Area of square=81 cm sq

side of square=9 cm

perimeter of sq=4*9=36 cm

rectangle perimeter=36 cm

2(l+b)=36

2(10+b)=36

20+2b=36

2b=36-20=16

b=16/2=8cm

area of rectangle=10*8=80 cm sq