#hope it help
#carry on learning
Answer:
5. 81.5 cm²
6. 79.2 cm²
7. 403 cm²
8. 452. 2 cm²
Step-by-step explanation:
5. Area of Rectangle: lw
(10)(16) = 160
Area of Circle: πr²
(If you add those 2 semicircle, you'll form one circle)
r = d/2
r = 10/2
r = 5
(5)²π
(25)(3.14) = 78.5
160 - 78.5 = 81.5 cm²
6. Area of Circle: πr²
r = 15/2
r = 7.5
(7.5)²π = 176.625
Area of triangle: (√3/4)(a)²
= 97.43
176.63 - 97.43 = 79.2 cm²
7. Area of square = a²
(22)² = 484
(9)² = 81
484 - 81 = 403 cm²
8. Area of unshaded part
2 semicircles = 1 circle
Area of Circle = πr²
r = 24/2
r = 12
(12)²π = 144π or 452.16 cm²
I tried my best po, hope it helps. If tama pabrainliest hehe, thank you and good luck!
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Answers & Comments
#hope it help
#carry on learning
Answer:
5. 81.5 cm²
6. 79.2 cm²
7. 403 cm²
8. 452. 2 cm²
Step-by-step explanation:
5. Area of Rectangle: lw
(10)(16) = 160
Area of Circle: πr²
(If you add those 2 semicircle, you'll form one circle)
r = d/2
r = 10/2
r = 5
(5)²π
(25)(3.14) = 78.5
160 - 78.5 = 81.5 cm²
6. Area of Circle: πr²
r = d/2
r = 15/2
r = 7.5
(7.5)²π = 176.625
Area of triangle: (√3/4)(a)²
= 97.43
176.63 - 97.43 = 79.2 cm²
7. Area of square = a²
(22)² = 484
(9)² = 81
484 - 81 = 403 cm²
8. Area of unshaded part
2 semicircles = 1 circle
Area of Circle = πr²
r = d/2
r = 24/2
r = 12
(12)²π = 144π or 452.16 cm²
I tried my best po, hope it helps. If tama pabrainliest hehe, thank you and good luck!