2 years ago

Hellpp please 20 points for that

Mathematics

1 answer:

Sergio [31]2 years ago

8 0

Answer:

a) 12cm

b) 360cm²

c) 2160cm cubed

Step-by-step explanation:

you would use Pythagoras theorem for A

so half of 18 is 9

15² - 9² = 144

the square root of 144 is 12

the height is 12cm

18 x 20 = 360cm²

csa x L

csa = b x h divide by 2

18 x 12 = 216cm²/2 = 108cm²

108xm² x 20cm = 2160cm cubed

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Hellpp please 20 points for that​

Hellpp please 20 points for that