Find the area of the irregular shape. Round to the nearest tenth.

PIC: http://www.mediafire.com/view/?67m8kuz77hcttep

Answers:
a. 90.2 cm²
b. 241 cm²
c. 65.1 cm²
d. 72.3 cm²

Question

Find the area of the irregular shape. Round to the nearest tenth.

PIC: http://www.mediafire.com/view/?67m8kuz77hcttep

Answers:
a. 90.2 cm²
b. 241 cm²
c. 65.1 cm²
d. 72.3 cm²

anonymous · Answer

plz help @cgreenwade2000

mathstudent55 · Answer

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?

anonymous · Answer

I know formula for the area of a circle....

mathstudent55 · Answer

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

anonymous · Answer

A = pi x r^2

mathstudent55 · Answer

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.

anonymous · Answer

I really need to hurry!!!! I can't in time!!!!!

anonymous · Answer

3.15 * 8 = 25.2

mathstudent55 · Answer

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