Question

If x = 15 in, y = 20 in, and z = 25 in, what is the surface area of the geometric shape formed by this net?

A. 1,650 in2
B. 2,100 in2
C. 1,100 in2
D. 1,800 in2

Answer 1

The answer for study island would be D. 1,800 in2

hope i helped :)

Answer 2

the answer is D: 1800 square in

Explanation:

find the area of the triangle

area = 1/2 bh

=1/2 (15 inch) (20 inch)

=150 square inch

***then multiply by 2 which gives you 300 square inch***

find the area of the 3 rectangular faces

A=lw

= (25 in) (15 in)

= 375 square inch

A = lw

= (25 in) (20 in)

= 500 square inch

A = lw

= (25 in) (25 in)

= 625 square inch

then add all 3 rectangular faces which equals to 1500 square inch

then add the triangular and rectangular

300 square inch + 1500 square inch = 1800 square inch