Work out the circumference of a circle with radius of 7.5cm. Taki Pi to be 3.142

C = 47.1 cm

Step-by-step explanation:

Here C = 2*pi*r.  Replacing pi with 3.142 and r with 7.2 cm, we get:

C = 2(3.142)(7.5 cm) = 47.13.  Note that because r is given to 1 decimal place, your area should be expressed to 1 decimal place also:  C = 47.1 cm

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step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°