Find the surface area of a cone with the radius of 4 cm and a slant height of 7 cm. a. 50.3 cm2 b. 88.0 cm2 c. 138.2 cm2 d. 276.5 cm2

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

This is too long-standing now get out

Number 5 is 50 degreesnumber 6 is 45 degreesnumber 7 is 60 degreesnumber 8 is 45 degrees