2 answers:
Hhhhh perimeter = circumference, and circumference = Pi x d/Diamater
so 12 x 3.14
= 37.68
Answer with Step-by-step explanation:
The perimeter(P) of a semi circle is given by:
P=πr+2r
where r is the radius of the semicircle
r=d/2 where d is the diameter
We are given diameter=12 cm
⇒ Radius= 12/2
= 6 cm
Perimeter=3.14×6+2×6
=18.84+12
=30.84 cm
Hence, best approximation for the perimeter of a semicircle with a diameter of 12 cm is:
30.84 cm
You might be interested in
Answer:
A
Step-by-step explanation:
18 x 5 = 90
F(x)= -8x²
f(-3)= -8* (-3)²
f(-3)= -8 * 9
f(-3)= -72
Answer:
that's the answer man ur welcome btw
Answer:
L = √(5² + 10² + 7²) = √174 in
Step-by-step explanation:
Answer:
a) 3x + ky = 8
ky = 8 - 3x
x – 2ky = 5
x - 2(8 - 3x) = 5
x - 16 + 6x = 5
7x = 21
x = 3 (shown)
b) x-2ky = 5
sub x = 3, y = 1/2
3-2k(1/2) = 5
-2k = 2
k = -1
