The corresponding sides of triangle abc and triangle def have equal lengths. the area of triangle abc is 4 square units, and the longest side of triangle def is five units long. what is the area of triangle def?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Tan198=asin164=? how to solve this? ?

What is the value of x? enter your answer in the box.