What is the length of cd? round to the nearest tenth. 2.3 cm 4.0 cm 10.7 cm 18.6 cm

Ashop has a sale that offers 20% off all prices. on the final day they reduce all the sale prices by 25% linz buys a ratio on the day. work out the overall percentage reduction on the price of the ratio

The length of a lap is 15 meters. if lisa wants to swim 450 meters this week,how many laps must she swim

What is the exact volume of the cone? (height is 9 cm, the radius is 15 cm)