Lilyy1k
19.09.2020 •
Mathematics
Hey i need help with these and i’ll mark you brainliest
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Ответ:
I believe for 21 PQR is 60 and therefore PQS would be 38
Step-by-step explanation:
Ответ:
B
Step-by-step explanation:
Area of semicircle=(r^2×3.14)/2
=(4×3.14)÷2
=6.28
area of rectangle=3×4
12+6.28=18.28
perimeter of semicircle is =(d×3.14)/2
=4×3.14/2
6.28+3+3+4
6+10
perimeter=16.28