The circle has a diameter of 16 inches. What is the area of the circle, rounded to the nearest square inch?

A circle with diameter 16 inches.
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An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be modeled by the function d(t)0.82. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Me because some of question i don’t understand

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side