Answer:
25.13 m
Step-by-step explanation:
pi r²÷2
pi 4²÷2=25.13
Answer:20
Step-by-step explanation:
Answer:
y is greater than or equal to 0.5/2.5x-1/2
y is greater than -2x
Step-by-step explanation:
Answer:
59.0303 miles per hour
Step-by-step explanation:
Answer:
√16×81 = 4×9 or √1296 = 36
√16×√81 = 4×9 = 36
Step-by-step explanation:
√81×16
We simplify 81 and 16 by prime factorisation (expressing a number as a product of its prime factors).
√81 = √3×3×3×3 = √9×9 = √9² = 9
√16 = √2×2×2×2 = √4×4 = √4² = 4
