Question

Please help with these questions

Answer 1

Explanation:

3. This consists of a rectangle and 2 equal hemispheres ( = 1 circle)

So are = 30 * 60 + π 15^2

= 1800 + 225* 3.14

= 2506.5 m^2

4. Area of shaded part = area of the rectangle - area of 2 circles

= 21 * 10.5 + 2(3.14 * 5.25^2)

= 220.5 - 2*86.546

= 47.59 cm^2 to nearest hundredth.

Answer 2

`{x}^(2) - 7 {x}^(2) - 12x = 0`