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3 years ago

The diameter of a circle is 12 yards. What is the circle's area? Use 3.14 for .

Mathematics

1 answer:

slamgirl [31]3 years ago

4 0

Answer:

r= d/2 => 12/2 => 6

a= πR²

a= 3.14×{6}²

a= 113.04 square yard (yd²)

a= 94.51 m²

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Step-by-step explanation:

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2 years ago

The position, x, of an object is given by the equation x = A + Bt +Ct2, where t refers to time. What are the dimensions of A, B,

Serjik [45]

Answer: Dimensions of A are of length [L]

Dimensions of B are of $LT^{-1}$

Dimensions of C are of $LT^{-2}$

Step-by-step explanation:

The given equation is

$x(t)=A+Bt+Ct^{2}$

Since the dimension on the L.H.S of the equation is [L] , each of the terms on the right hand side should also have dimension of length[L] to be dimensionally valid

Thus

Dimensions of A = [L]

Dimensions of Bt = [L]

$Bt=[L]\\\\$ $[B][T]=[L]$ $\\\\\therefore [B]=LT^{-1}$