Answer: The height of the building is 6.49 meters.
Step-by-step explanation:
This can be translated to:
"A building projects a 7.5 m shadow, while a tree with a height of 1.6 m projects a shadow of 1.85 m.
Which is the height of the building?"
We can conclude that the ratio between the projected shadow is and the actual height is constant for both objects, this means that if H is the height of the building, we need to have:
(height of the building)/(shadow of the building) = (height of the tree)/(shadow of the tree)
H/7.5m = 1.6m/1.85m
H = (1.6m/1.85m)*7.5m = 6.49m
The height of the building is 6.49 meters.
Answer:
Centre of the circle has coordinates(-2,1) and the raduis = square root (12)
Step-by-step explanation:
Shown in the attachment for better understanding.
Answer:
Answer is 10/12 , 15/18 , 20/24 , 25/30 .
Step-by-step explanation:
1. 5/6 { Multiply both numerator and denominator with 2 }
5/6 = 10/12
2. 5/6 { Multiply both numerator and denominator with 3 }
5/6 = 15/18
3. 5/6 { Multiply both numerator and denominator with 4 }
5/6 = 20/24
4. 5/6 { Multiply both numerator and denominator with 5}
5/6 = 25/30
Hint:
Diameter(d)= 2 radius(r)
circumference= 2πr= πd
1. diameter= 19 × 2 = 38 inches
circumference= 3.18(38) = 119 inches (3 s.f.)
Note that I use 3.18 instead of π because the question states to use 3.14 for π.
Likewise, if you are given the diameter, divide it by 2 to find radius. Let's try a question which only gives you the diameter.
4. radius= 22 ÷ 2 = 11cm
circumference= 3.14(22) = 69.1cm (3 s.f.)
Answer:
B
Step-by-step explanation:
Rise over run
