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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def size_r_img_inches(width, height):
 """Compute the width and height for an R image for display in IPython Neight width nor height can be null but should be integer pixel values > 0. Returns a tuple of (width, height) that should be used by ggsave in R to produce an appropriately sized jpeg/png/pdf image with the right aspect ratio. The returned values are in inches. """

    # both width and height are given
    aspect_ratio = height / (1.0 * width)
    return R_IMAGE_SIZE, round(aspect_ratio * R_IMAGE_SIZE, 2)