Answer:31.4cm
Step-by-step explanation:
Circumference=2×π×(diameter/2)
Circumference=2×3.14×10/2
Circumference=(2×3.14×5)
Circumference=31.
Answer:
the answer to 30-60-90=0
Step-by-step explanation:
90-60=30-30=0
Sry I'm couldn't solve the second one but the ans for the 1st is 504 sq units
We have to add 8/15 to 2/5.
To add two fractions we have to make them have the same denominator, so we have to convert 2/5 to have a denominator of 15. To do this, we have to multiply 2/5 by 3 and then we can add the fractions:

Answer: 14/15
Answer:
First we need to calculate the are of each wall, since we alredy knew the length (l) and the width (w) which is the height of the wall in this case:
A = wl = 9 . 12 = 108 (ft²)
We also know that he painted 3 walls, we need to multiply our first result by 3, in other words, the area of wall that Brett painted is the sum of the area of three walls: 108 . 3 = 324 (ft²)