Step-by-step explanation:
Area of circle
=πr²
=<u>2</u><u>2</u><u>. </u> ×4×4
7
=<u>22×16</u>
= <u>352</u>
=59.3
Answer:
50.3? im not exactly sure if this is right
26. x²+5x+25/4 = (x + 5/2)²
29. x²/4y²-2/3+4y²/9x² = (x/2y - 2y/3x)²