PJ is decorating pupcakes for Rocky’s birthday party. Her color scheme is black,purple,and green.She will use this spinner to de
termine the color of sprinkles on each pup cake.
2 answers:
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Answer:
Step-by-step explanation:
The area of a circle is A = πr², where r is the radius. That means in order to solve this we have to find the value of x, which is the diameter of the lake, and then divide it in half to get the radius. To find x we will use similar triangles and proportions. x is the height of the big triangle and 4.5 is the height of the smaller triangle; 15.3 + 7.4 is the hypotenuse of the big triangle and 7.4 is the hypotenuse of the smaller triangle. Setting up our proportion:
which simplifies a bit to
and cross multiply to solve for x:
7.4x = 102.15 so
x = 13.8 That is the diameter of the lake. Divide it in half to get 6.9, the radius. Applying the area formula for a circle:
A = (3.14)(6.9)² and
A = 3.14(47.61) so
A = 149.5 which rounds to 150, Choice C
Answer:
The answer is option 2.
Step-by-step explanation:
Firstly, you must factorize the possible expressions :
Next you have to divide by converting to multiplication :
Lastly, you can cut out the similar expressions :