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plz help @cgreenwade2000
You have an 8-cm by 5-cm rectangle plus a half circle with 4 cm radius. Do you know the folrmulas for the areas of a rectangle and a circle?
I know formula for the area of a circle....
Ok, so you need half the area of a circle with radius 4 cm. The area of a rectangle is A = LW, where L = length and W = width
A = pi x r^2
Right. Calculate that and divide by 2 because you have only half a circle. Then add that to A = LW, with L = 8 cm and W = 5 cm, which is the area of the rectangle.
I really need to hurry!!!! I can't in time!!!!!
3.15 * 8 = 25.2
Oh no! I have to go! I'll just get the answer wrong :/
That's good. You have the area of the half circle. Now you need to calculate the area of the rectangle and add the two areas.
So 40 + 25.2 = 65.3. That's the answer?
But 65.3 isn't an answer choice.
40 + 25.1 = 65.1
You got it! Good work.
The answer is 6.1. I just did it and got it right!
Alright! Thx! :D