Answer:
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Step-by-step explanation:
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Answer:
P ≈ 45.51
Step-by-step explanation:
19cm is the hypotenuse (C)
11cm is the opposite (A)
adjacent (B) missing
formula a² + b² = c²
So we need to find b which is b²= c² - a²
b² = (19)² - (11)² = 240
b = square root of 240
b = 15.5
P = a+b+a2+b2
P ≈ 45.51
The decimal equivalent of 400% is 4 because percent means one of a hundred and 400 of a hundred is 4 think of it as a fraction, 400/100 take away the zeros and you have 4/1=4
So you do 18 x 8 to get the area of the rectangle bit. (18 x 8 = 144)
Then you can put the two half circles together to make a full circle. Area of a circle is
pi x radius x radius
so the radius would be half of the diameter (8/2 = 4)
so area would be:
Pi(equal to around 3.14) x 4 x 4 = 50.2
then you add the areas of the rectangle and circle
144 + 50.2 = 194.2
