How many bricks each 25 cm by 15 cm by 8 cm, are required for a wall 32 m long, 3 m high and 40 cm thick?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?

What is the sum of the first 8 terms of the geometric series