The answer will depend on what the surface area is of. The surface areas of regular shapes are can be calculated from formulae but these will depend on the shapes. For non-regular areas there may or may not be simple formulae.
To calculate the surface area of a shape find the area of each side, and then, add all of the areas together. The sum of the areas is the surface area.
The surface area is the sum of all the areas of all the shapes that cover the surface of the object.
It would be the sum of the areas of each surface separately.
The ratio of their surface areas is 42 to 52 or 16 to 25
They are called sun spots, dark areas that are cooler than the rest of the surface.
Sunspots are cooler regions on the surface of the sun. Visually, they look like dark circles sporadically dotting the sun, and their numbers change from day to day.
Sunspots are the coolest areas on the surface of the sun
A sunspot is a dark spot on the sun's surface. It is darker because it is cooler than most parts on the sun.
Sunspots are dark areas on the sun's surface that are cooler than the surrounding area.
Sunspots are cooler regions on the sun's surface compared to the surrounding areas. They appear dark because they are lower in temperature due to intense magnetic activity inhibiting convection.
Dark areas on the surface of the sun are called sunspots. They appear darker because they are cooler areas compared to their surroundings due to strong magnetic activity. Sunspots are temporary phenomena that can last from days to weeks.
Photosphere- outer (gaseous) layer or surface of sun that we see Faculae- bright areas Sunspots- dark areas
The dark area is known as a sunspot on the Sun's surface. Sunspots appear darker because they are cooler than their surroundings. They are caused by strong magnetic activity that inhibits convection and reduces temperature.
The luminosity of a star is related to its surface temperature and size. Hotter stars with larger surface areas tend to have higher luminosities, while cooler stars with smaller surface areas have lower luminosities.
Dark patches on the sun's surface, known as sunspots, are areas of reduced temperature caused by magnetic activity inhibiting heat transfer. They are temporary phenomena that appear darker than their surroundings due to their cooler temperatures. Sunspots are associated with increased solar activity and can impact Earth's space weather.
Sunspots are dark areas on the sun's surface that are cooler than the surrounding area.