A circle has an area of 64 cm²
Work out the radius of the circle.
(2marks)

4.51 cm

Step-by-step explanation:o Area of circle=pi×r^2

Given area=64 cm sq.

so, 64=3.14×r^2

64/3.14= r^2

20.38= r^2

√20.38=r

4.51=r

Therefore, radius= 4.51 cm

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t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!