Question

the lenth of a rectangle is 20cm .ore than its breathif the perimeter is 100cmfind thedimensionof rectangle

Answer 1

Let, the breath of rectangle be x cm
therefore, length will be (20+x) cm
Perimeter is 100 cm
but.....
perimeter = 2(length+breath)
100 = 2(20+x+x)
100 = 2(20+2x)
100. = 40+4x
100-40÷4= x
x=15
therefore,breath= 15cm and length= 35cm
*srry i didn't know anything about dimension*
but according to me rectangule is 3D