NEED HELP PLEASE ALL QUESTIONS

Question

asked Mar 5, 2019 230k views

1 Answer

MegaCasper · Answer 1 · 2019-03-09T12:27:39+0000

Problem N 10) Find the surface area

we know that

the surface area is equal to

SA=2*area of the base+perimeter of base*height

Find the area of the base B (area of a square)

$B=42*42=1,764\ mm^(2)$

Find the perimeter of the base P (perimeter of a square)

$P=4*42=168\ mm$

height=68 mm

substitute in the formula

$SA=2*1,764+168*68=14,952\ mm^(2)$

therefore

the answer Problem N 10) is

the surface area is
$14,952\ mm^(2)$

Problem N 11) Find the volume

we know that

the volume is equal to

V=area of the base*height

find the area of the base A (area of a triangle)

$A=(1)/(2)*6*8=24\ ft^(2)$

height =4 ft

substitute in the formula

$V=24*4=96 \ ft^(3)$

therefore

the answer Problem N 11) is

the volume is equal to
$96 \ ft^(3)$