Se tiene un rectángulo cuya base mide el doble que su altura y su área es 12
centímetros cuadrados. Calcular el perímetro del rectángulo y su diagonal.

Part 1) The perimeter is  

Part 2) The diagonal is

Step-by-step explanation:

The question in English is

You have a rectangle whose base is twice the height and its area is 12

square centimeters. Calculate the perimeter of the rectangle and its diagonal

step 1

Find the dimensions of rectangle

we know that

The area of rectangle is equal to

so

----> equation A

The base is twice the height

so

----> equation B

substitute equation B in equation A

Find the value of b

step 2

Find the perimeter of rectangle

The perimeter is given by

substitute

step 3

Find the diagonal of rectangle

Applying the Pythagorean Theorem

substitute

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)