I believe the answer is A.
The formula for the circumference is pi times the diameter.
The circumference is 42 x 3.14.
42 x 3.14 = 131.88mm
The answer would be D.
Hope this helps!
- Juju
Answer:
60 x 90 = 5,400 cm^3 (cubed)
Step-by-step explanation:
Multiply them all together like, 90 x 20 x 30
As it is a composite shape we would split the shape up so we get a triangle and a square
Then we would work out the area of the square and the triangle
Area of a square = length x width
Area of a triangle = 1/2 base x height
Area of a square = 10 x 15 = 150
Area of a triangle = 1/2 15 x 5 = 37.5
(5 is the height of the triangle as you do 15-10 to work out the height of just the triangle
To get the total area we just combine both areas using addition
37.5+150=187.5
Answer:187.5ft squared
Hope this helped