**Answer: A 274.1 **

**Step-by-step explanation: ** **A=(n)(a)(ri/2). ** So, when eveverything is plugged in it would be **(7)(8.7)(9/2)=274.05**

<h3>You can and should use this formula for any regular polygon</h3>

Answer:

GCF is 6

Step-by-step explanation:

factors are 1,2,3,6

**Answer:**

Height of the tree is approx 17.74 feet.

**Step-by-step explanation:**

the angle of elevation of the sun at 10:00 a.m. is 29°.

Then measure of angle C = 29°

At that point, a tree’s shadow is 32 feet long.

Then BC=32

Now we need to find about how tall is the tree.

So we can use trigonometric formula of right triangle to find missing height (x) of side AB.

Hence height of the tree is approx 17.74 feet.

Answer:

Step-by-step explanation:

1. Eat 2. Leave 6.bye

~212 rounded to the nearest 10 would be 210.

~87 rounded to the nearest 10 would be 90.

210 + 90 = 300

Your answer would be 300.

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Hope this helps!!!! :D