Question

help me please i need the answer

Answer 1

Answer:

surface area = area of base + 1/2 × perimeter of base × slant height.

Step-by-step explanation:

Hope you will understand!!

Answer 2

Answer:

M) 400 SM SQ

Step-by-step explanation:

TOTAL SURFACE AREA = 4(Area of triangle) + Area of rectangle

Now formula of area of triangle is 1/2*base *height

so on putting in formula you will get area of triangle =

$(1 \times 10 \times 15) \div 2$

$75$

Now area of rectangle will be length* breadth

on putting value in formula you will get 10*10= 100 cm square.

put these value of area's in below equation

TOTAL SURFACE AREA = 4(Area of triangle) + Area of rectangle

=4*75+100

and your answer is =300+100

=400 square cm