Final answer:
To find the decimal equivalent of Venus's diameter compared to the sun's, divide the given percentage by 100. For Venus, the answer is 0.0087, and for the sun, it is 0.000265.
Step-by-step explanation:
To convert the percent of Venus's diameter compared to the sun's diameter into a decimal, you divide the percent by 100. For Venus, with a diameter percent of 0.87%, the decimal equivalent is 0.87/100 = 0.0087. Comparatively, the sun's diameter percent is 0.0265%, which is 0.0265/100 = 0.000265 as a decimal.