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19. You can use Pythagoras to figure out the missing length of the triangle
√15² - 9² = 12
(12 x 9)/2 = 54
((20 + 32) / 2) x 9 = 234
234 + 54 = 288
That's what i got ^^ Not 100% sure if its correct
20. 8 + 3 + 6 + 3 = 20
20/4 = 5
Mean = 5
Hope This Helps You!
Good Luck :)
Have A Great Day ^_^
- Hannah ❤
Here is the volume of a cube that has the dimensions 12 by 4 by 7...
12x4x7 = 336cm
Answer: 22 feet
Step-by-step explanation:
Answer:
Step-by-step explanation:
Step-by-step explanation:
a) the perimeter of the shape is similar to the perimeter of the one full rectangle =
2×(12+9) = 2× 21 = 42 cm
b) the area of the shape =
(12×9) -(4×6) = 108 -24 = 84 cm²
