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acute angle

Step-by-step explanation:

-an acute angle is less that 90 degrees

-straight angle is 180 degrees

-right angle is 90 degrees

-obtuse angle is an angle more than 90 degrees but less than 180 degrees

by looking at these definitions and the image of the angle . we can notice that the angle is less than 90 degrees hence its an acute angle

Acute angle

Step-by-step explanation:

measurement of angle < 90, So it is acute angle

answer: 45

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere