please i will mark as brainliest

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)