Jawaban:
rumus
luas lingkaran L=πr²
keliling lingkaran K = 2πr
10. a. L= 154= 22/7. r²
r²= 154 . 7/22=49
r=√49 =7
b K =22= 2.22/7 r
r = 22 . 7/44=7/2=3,5
11. L= 3,14 (10)²=3,14 .100= 314
L = 22/7 (1/2 14)²=22/7 . 49=154
12. K= 2 22/7 . 21= 132
K = 2. 3,14 . 1/2.50= 157
14
xy²= 10²-(4+2)²
= 100-36=64
xy =√64 = 8
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Verified answer
Jawaban:
rumus
luas lingkaran L=πr²
keliling lingkaran K = 2πr
10. a. L= 154= 22/7. r²
r²= 154 . 7/22=49
r=√49 =7
b K =22= 2.22/7 r
r = 22 . 7/44=7/2=3,5
11. L= 3,14 (10)²=3,14 .100= 314
L = 22/7 (1/2 14)²=22/7 . 49=154
12. K= 2 22/7 . 21= 132
K = 2. 3,14 . 1/2.50= 157
14
xy²= 10²-(4+2)²
= 100-36=64
xy =√64 = 8