Answer:
39 inches.
858 inches²
Step-by-step explanation:
Length:- (if length = x)
2 ( 11 + x ) = 100
22 + 2x = 100
2x = 100 - 22
2x = 78
x = 78 ÷ 2
x = 39 inches
Area:-
Area = l × b
= 39 × 22
= 858 inches²
Answer:
1/3
Step-by-step explanation:
A dilation is an enlargement or reduction of an image by a scale factor. The scale factor is the same ratio that cam be found from between the two figures.
The long leg of the original triangle has the length of 6. The small triangle has a long leg of length 2.
The ratio is 2/6 = 1/3.
The answer is: 2 times taller than the person
Explanation: 6/15=height of lamp/(15+15); 6/15=height of lamp/30; height of lamp=(30/15)6=2×6, 2 times taller.
(Lamp is 12 feet tall)
Answer:
254.44cm²
Step-by-step explanation:
For the triangles do pythagoras theorem:
a²+b²=c²
c=hyptonuse=8.8
b=6.2
so we don't know what a is.
We rearrange a²+b²=c² to get a²=c²-b²
8.8²=77.44
6.2²=38.44
77.44-38.44=39
square root of 39 is 6.2(1 d.p)
a=6.2
6.2x6.2=38.44cm²
6.2x7.2=44.64cm²x2=89.28cm²
8.8x7.2=63.36cm²x2=126.72cm²
126.72+89.28+38.44=254.44cm²
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