90% as a decimal is .9 and then as a fraction in simplest form is 9/10
Hope it helps
Answer:
314 square feet
Step-by-step explanation:
we know that
The area that will be covered by the spray of the quarter-circle sprinkler head, is equal to the area of a quarter circle with radius of 20 feet
so
The area of a quarter circle is

we have


substitute

Answer:
second number is 17, first number is 3
Step-by-step explanation:
The answer is 58 degrees.