Area of a square is 196 cm² . Find the perimeter of the square. (ii) If the square is altered into a rectangle by increasing the

Question

Area of a square is 196 cm²

. Find the perimeter of the square. (ii) If the square is altered into a rectangle by increasing the length by x

centimeters, and decreasing the breadth by y centimeters, find the area of

the rectangle in terms of x and y.​

in progress 0
Khoii Minh 4 years 2021-07-30T11:13:02+00:00 1 Answers 17 views 0

Answers ( )

  1. taiduc
    0
    2021-07-30T11:14:44+00:00
    Reply

    Step-by-step explanation:

    Area of Square=side²

    Side=√(Area of the square)

    Given area of the square=196cm²

    Side of the square=√196=14cm

    Perimeter of square=4*side=4*14=56cm

    Length of the rectangle=(14+x)cm

    Breadth of the rectangle=(14-y)cm

    Area of rectangle=Length*Breadth=

    (14+x)(14-y)=14(14)+14(-y)+x(14)+x(-y)=(196-14y+14x-xy)cm²

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )