What is the volume of a hemisphere with a diameter of 6.7 ft, rounded to the nearest tenth of a cubic foot?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square