**Workout**

Question 1(a): 45cm squared

Question 1(b): 156.3cm squared

Question 1(c): 52.6cm squared

Question 1(d): 69.3cm squared

Question 1(e): 27.6m squared

Question 1(f): 41.97 square miles

Question 2(a): 72.32 cm squared

Question 2(b): 28.6 cm squared

Question 2(c): 33.1cm squared

Question 3(a): 31.3 cm squared

Question 3(b): 470.1 cm squared

Question 3(c): 50.1 mm squared

Question 4(a): 8.5cm

Question 4(b): 7cm

Question 4(c): 7.9cm

Question 5(a): 78.9 degrees

Question 5(b): 31.6 degrees

Question 5(c): 30 degrees

**Apply**

Question 1(a): 12.7 cm squared

Question 1(b): 81.97 cm squared

Question 1(c): 367.4 cm squared

Question 2: 26.9cm squared

Question 3: 993 square metres

Question 4: 44.959 cm squared

Question 5: 36.862 cm squared

Question 6: Video

sine, sin, triangles