pls help pls pls

Question

A soup can has a diameter of 7 cm and a height of 13 cm. How much tin is required for the can? Round to the nearest tenth.

The surface area of the pyramid is 478 m. Find the slant height.

A triangle is rotated about the dotted line in the figure below.

Determine all of the three-dimensional shapes that could be formed by the rotation of the triangle about the line.

Which of the following figures has a rectangle as a cross-section? Select ALL that apply.

Answer 1

The pictures did not upload into your question. It makes it difficult to answer the remainder of the questions.

Answer 2

diameter of can = 7 cm

height = 13 cm

Area of top or bottom = pir^2 = pi(7/2)^2 = 49pi/4

surface area = 2(49pi/4) + 13pi(7)

= 24.5pi + 91pi

=115.5 pi = about 115.5(3.14) cm^2

= about 362.854 cm^2 of tin for the side, top and bottom

= 362.9 cm^2 rounded to nearest tenth of a square centimeter

Answer 3