me wit these 3 questions plz.a cone has a base radius of 7 centimeters and a height of 21 centimeters.what is the volume of the cone? a.28π cm3 b.49π cm3 c.147π cm3 d.343π cm3

Answer this 30 points and brainliest!

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.