Divide 21.75 by 5 students which would mean each students ticket was $4.35.
Answer:
Step-by-step explanation:
A= πr²
A= 22/7 multiply by the radius.
Divide 9.4cm by 2.
Whatever you get is your answer. Now take the formula I have shown you above. Whatever you get is your answer.
Answer:
Surface Area of a Cube = 6
Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac
Surface Area of a Sphere = 4 pi r
Surface Area of a Cylinder = 2( pi
) + (2 pi r)* h
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Answer:
total surface area = 672 cm^2
Step-by-step explanation:
radius of hemisphere, r = 7 cm
radius of base of cone, r = 7 cm
height of cone, h = 22-7 = 15 cm
slant length of cone, L = sqrt(7^2+15^2) = sqrt(274)
Area of the cone
= pi r L
= pi * 7 * sqrt(274)
= 115.87 pi
= 364.02 cm^2
Area of hemisphere
= 2 pi r^2
= 2 pi * 7^2
= 307.88 cm^2
Total surface area = 364.02 + 307.88 = 671.89 cm^2
Multiply both sides by -4 and you should get r= -4/7