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puteri [66]
2 years ago
8

Can someone help or explain the problem to me

Mathematics
1 answer:
SVEN [57.7K]2 years ago
7 0

Answer:

I think I explained the circle one before so I'll explain the left question because I wanted some points.

here,

area of circle is πr² which is given= 12 π cm²

so πr²= 12π

r= 2√3

d= 2r= 4√3

AB is diameter so AB= 4√3

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With the second question of part a, the expression is basically saying 4 times whatever 5+3 is. So 5+3= 8, and 4(8) is 40

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