Question

NEED HELP PLEASE ALL QUESTIONS

Answer 1

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)

$A=\frac{1}{2}*6*8=24\ ft^{2}$

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 $96 \ ft^{3}$