Answer:
The are is 64 cm.
Step-by-step explanation:

5 * 2 = 10
12 * 4.5 = 54
54 + 10 = 64cm
<em><u>Hope this helped! Have a nice day! Plz mark as brainliest!!!</u></em>
<em><u>-Lil G</u></em>
Answer:
20 % decay
Step-by-step explanation:
Exponential equations are in the form
y = a * b^x
a is the initial value
b is the growth or decay
b>1 is growth b-1 rate of growth
b <1 decay 1-b rate of decay
1-.8 = .2
Change to decimal form
20 % decay
<span><span>1. </span></span>Draw a line segment of length s. Label its endpoints PPP and QQQ.<span><span>
</span><span>2. </span></span>Extend the line segment past QQQ.<span><span>
</span><span>3. </span></span>Erect the perpendicular to PQ−→−normal-→PQ {PQ} at QQQ
<span><span>4. </span></span>Using the line drawn in the previous step, mark off a line segment of length sss such that one of its endpoints is QQQ. Label the other endpoint as RRR.<span><span>
</span><span>5. </span></span>Draw an arc of the circle with center PPP and radius PQ normal PQ\ {PQ}.<span><span>
</span><span>6. </span></span>Draw an arc of the circle with center RRR and radius QR normal QR\overline{QR} to find the point SSS where itintersects the arc from the previous step such that S≠QSQS\neq Q.<span><span>
</span><span>7. </span></span>Draw the square PQRSPQRSPQRS.