Answer is 273.1
Find the area of the two semi circles by just finding the area of them combined because they are two identical semi circles, their area can be found using the formula a= πr^2
Then just multiply 9 x 8 and add them.
78000000 in scientific notation is
7.8 x 10 ^ 7
<span><span><span><span>2a</span>−9</span>+<span>2a</span></span>=<span><span><span>−<span>2a</span></span>+15</span>+<span>2a</span></span></span><span><span><span>4a</span>−9</span>=<span>15
</span></span>Step 2: Add 9 to both sides.<span><span><span><span>4a</span>−9</span>+9</span>=<span>15+9</span></span><span><span>4a</span>=<span>24
</span></span>Divide both sides by 4.<span><span><span><span><span>4a/</span>4</span></span></span>=<span><span>24/<span>4
</span></span></span></span>Answer:<span>a=<span>6</span></span>
155/10,000 divided by 5
31/2000 =0.0155
Answer:
3
Step-by-step explanation:
it adds three every time
