Answer:
35.1 units
Step-by-step explanation:
Imagine a right-angled triangle with RS as hypotenuse. The base would be 3 units and the height would be 6 units. By Pythagorus:
RS²=3²+6²
RS=
≈6.7 units
Imagine a right-angled triangle with RT as hypotenuse. The base would be 9 units and the height would be 12 units. By Pythagorus:
RT²=9²+12²
RT=
= 15 units
Imagine a right-angled triangle with TS as hypotenuse. The base would be 12 units and the height would be 6 units. By Pythagorus:
TS²=12²+6²
TS=
≈13.4 units
Perimeter=RS+RT+TS
=6.7+15+13.4
=35.1 units
Answer:
90°
Step-by-step explanation:
because by bisecting the angle, you are going through the centre in this triangle. Splitting to triangle in half gives two right-angled triangles :)
sorry for bad drawing
Answer:
162 pieces
Step-by-step explanation:
Andrea has 18 yards
How many 4 inch pieces can she get?
Convert
1 yard = 3 feet
18 yards = 54 feet
1 foot = 12 inches
54 feet = 648 inches
Divide
648 inches ÷ 4 inches = 162 pieces
Hope this helps :)
Is there a picture to go along with this??