Question 6, 9.4.12 > HW Score: 77.78%, 7 of 9 points @ Homework: Sections 6.5 & 9.4 Part1 072 1 a Points:00f1 Approximate the following integral by the trapezoidal rule; then nd the exact value by integration. 10 Use the trapezoidal rule to approximate the integral. to (Round the final answer to five decimal places as needed. Round all intermediate values to four decimal places as needed.) HW Score: 77.78%, 7 of 9 points @ Homework: Sections 6.5 & 9.4 Question 5, 6.5.9-PS Points: 0 of1 A scientist puts 50 grams of radioactive radium having a half-life of 1690 years into a concrete vault. What will be the average amount of radium in the vault during the next 600 years? There will be an average of grams of radium in the vault during the next 600 years. (Round intermediate steps to eight decimal places, then round the final answer to two decimal places.)