Can someone help me find the surface area?​

19.5 inches

229

Step-by-step explanation:

Formula: A=2(wl+hl+hw)

there fore applying it to this prism, the equation would look like:

A=2(wl+hl+hw)=2·(6.5·10+3·10+3·6.5)

A=2(65+30+19.5)

A=2(114.5)

A=229

have a lovely day!

step-by-step explanation:

it will be a cylinder. with a diameter of 8 and 4 single pieces high

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh