172k views
0 votes
NEEDS HELP!! I DONT UNDERSTAND!!

NEEDS HELP!! I DONT UNDERSTAND!!-example-1
User JuanF
by
7.5k points

2 Answers

5 votes

Answer: 1,285.64 cm^2

Explanation:

First you can find the area of the two smaller semi-circles which is one circle. a=r^2*3.14. The area of those two circles combined is 200.96 cm^2. Then you can find the area of the larger semi-circle. Again repeat the formula and you get the area of the full circle which is 1017.36 cm^2. Divide that by 2 to get the area of the semi-circle giving you the area of 508.68 cm^2. Finally, to find the area of the rectangle use the formula a=l*w. Using this formula the area of the rectangle is 576 cm^2. Lastly, add up all of the areas to get the full area of the shape. 200.97+508.68+576= 1,285.64 cm^2.

User Justin Lee
by
7.4k points
3 votes

ok so the rectangles area is 576cm according to the rectangles formula of B times H. now for the two half circles you have to find the are of a whole circle and then devide it by two,so the total area of the half circles combined is 201 cm. then you use the same formula(PiR^2) to get a total area of 1794 cm

User Katrice
by
8.0k points