Area of a semi-circle = 1/2 x x r square.
area of larger semi circle
= 1/2 x x 10 square
= 50
area of smaller semi circle
= 1/2 x x 5 square
= 12.5
Total area = 50 + 12.5 = 196 cm square ( to 3 sf ) or 62.5
Answer:
8/4
Step-by-step explanation:
8/4 is equal to 2 and the others equal less than 1 1/2 and 2
Answer:
B .00030
Step-by-step explanation:
Answer:
161.5 in.^2
Step-by-step explanation:
Since you don't have a figure, from your description, I understand that the base of each small upper triangle is 8.5 inches. That means that each small triangle on top has a base of 8.5 inches and a height of 5 inches, and each small triangle below has a base of 8.5 inches and a height of 13 inches. My calculations below are base don this understanding.
The area of a kite is
A = (Bb)/2
where B and b are the lengths of the diagonals.
The diagonals have lengths:
B = 13 in. + 6 in. = 19 in.
b = 8.5 in. + 8.5 in. = 17 in.
A = (Bb)/2
A = (19 in. * 17 in.)/2
A = (323 in.^2)/2
A = 161.5 in.^2
You would need 6 packages for 27 students because 27 isn't divisible by 5 without a remainder and all students need pencils. So, you would need to bu another package of pencils.