Question

a square has each side 5 3/10 cm long. what is the perimeter of a rectangle that is made up of 3 such squares.?​

Answer 1

Answer:

52.8

Don't report if the answer is wrong

perimeter of rectangle = 2(l+b)

l = 5.3 *4 =21.2

b = 5.3

2(l+b) =2(21.2+5.3)

2*26.4

=52.8

Answer 2

Answer:

42.4

Step-by-step explanation:

turn the fraction into a decimal.

3/10 = 0.3

5 + 0.3 = 5.3

5.3 * 4 = 21.2

21.2 = 1 square.

10.6 + 15.9 + 15.9 = 42.4

In perimeter, you only add the sides that you can see on the outside. its a rectangle, not a rectangular prism, so it's 2D meaning 4 sides. the first square, you can see 3 of the sides. second square, only 2. the last square, you can, again, see 3 sides. add those together and you get the perimeter of the rectangle.