On a piece of paper, use a protractor and a ruler to construct △abc with ab=3 in. , ac=3 in. , and m∠a=60° .

which statement is true about this triangle?

bc=3 in.

bc=4 in.

bc=5 in.

the length of bc cannot be measured.

Could somebody me with this radical simplification?

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?