Area of square = 24cm²
⇒ Length = √24
Find the diagonal of half the square:
a² + b² = c²
c² = (0.5√24)² + (√24)²
c² = 6 + 24
c² = 30
c = √30
The diagonal of half of the square is the radius of the circle.
⇒ radius = √30
Area of the semicircle = 1/2πr² = 1/2π(√30)² =15π
Answer: 15π²
Answer:
B
Step-by-step explanation:
Rise over run
133 x 99 = 13167
100% correct
9x + 4 = 472
Step by Step Explanation
We know there are 9 buses, but we don't know how many students are on the buses, so that makes the first part of the equation 9x.
We also know there are 4 students in cars, so we now have an equation of 9x + 4.
We also know there is a total of 472 students altogether, so now our final equation is 9x + 4 = 472
The answer to question 19 is C
