4 + 12 +12 = 28cm
so in conclusion it is 28
Answer:
<h3>
<u>7. Ans ;</u></h3>

<h3>
<u>8</u><u>.</u><u> </u><u>Ans</u><u> </u><u>;</u></h3>
<u>
</u>
Step-by-step explanation:
<h3>
<u>7. Ans ;</u></h3>

So ;

<h3><u>
8. Ans ;</u></h3>

So ;

I hope I helped you^_^
Answer:
D
Step-by-step explanation:
∠ 6 is formed by the 2 lines that intersect at D
then the vertex of ∠ 6 is D
Would it be 4(1)^2+2(2(1)+2)^2=100